Live analysis

131,565

131,565 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

131,565 (one hundred thirty-one thousand five hundred sixty-five) is an odd 6-digit number. It is a composite number with 24 divisors, and factors as 3 × 5 × 7² × 179. Written other ways, in hexadecimal, 0x201ED.

Arithmetic Number Cube-Free Deficient Number Evil Number Gapful Number Happy Number Harshad / Niven Recamán's Sequence

Interestingness

★ ★ ★ ★ ☆

6 notable facts · grade B

131,553 131,554 131,555 131,556 131,557 131,558 131,559 131,560 131,561 131,562 131,563 131,564 131,565 131,566 131,567 131,568 131,569 131,570 131,571 131,572 131,573 131,574 131,575 131,576 131,577

less more

Properties

Parity: Odd
Digit count: 6
Digit sum: 21
Digit product: 450
Digital root: 3
Palindrome: No
Bit width: 18 bits
Reversed: 565,131
Recamán's sequence: a(229,242) = 131,565
Square (n²): 17,309,349,225
Cube (n³): 2,277,304,530,787,125
Divisor count: 24
σ(n) — sum of divisors: 246,240
φ(n) — Euler's totient: 59,808
Sum of prime factors: 201

Primality

Prime factorization: 3 × 5 × 7 ² × 179

Nearest primes: 131,561 (−4) · 131,581 (+16)

Divisors & multiples

All divisors (24)

1 · 3 · 5 · 7 · 15 · 21 · 35 · 49 · 105 · 147 · 179 · 245 · 537 · 735 · 895 · 1253 · 2685 · 3759 · 6265 · 8771 · 18795 · 26313 · 43855 · 131565

Aliquot sum (sum of proper divisors): 114,675

Factor pairs (a × b = 131,565)

1 × 131565

3 × 43855

5 × 26313

7 × 18795

15 × 8771

21 × 6265

35 × 3759

49 × 2685

105 × 1253

147 × 895

179 × 735

245 × 537

First multiples

131,565 · 263,130 (double) · 394,695 · 526,260 · 657,825 · 789,390 · 920,955 · 1,052,520 · 1,184,085 · 1,315,650

Sums & aliquot sequence

As consecutive integers: 65,782 + 65,783 43,854 + 43,855 + 43,856 26,311 + 26,312 + 26,313 + 26,314 + 26,315 21,925 + 21,926 + 21,927 + 21,928 + 21,929 + 21,930

Aliquot sequence: 131,565 → 114,675 → 93,645 → 68,751 → 30,569 → 7,639 → 1 → 0 — terminates at zero

Continued fraction of √n

√131,565 = [362; (1, 2, 1, 1, 3, 1, 5, 1, 3, 14, 1, 1, 5, 48, 5, 1, 1, 14, 3, 1, 5, 1, 3, 1, …)]

Period length 28 — the block in parentheses repeats forever.

Representations

In words: one hundred thirty-one thousand five hundred sixty-five
Ordinal: 131565th
Binary: 100000000111101101
Octal: 400755
Hexadecimal: 0x201ED
Base64: AgHt
One's complement: 4,294,835,730 (32-bit)
Scientific notation: 1.31565 × 10⁵
As a duration: 131,565 s = 1 day, 12 hours, 32 minutes, 45 seconds

In other bases

ternary (3) 20200110210

quaternary (4) 200013231

quinary (5) 13202230

senary (6) 2453033

septenary (7) 1055400

nonary (9) 220423

undecimal (11) 8a935

duodecimal (12) 64179

tridecimal (13) 47b65

tetradecimal (14) 35d37

pentadecimal (15) 28eb0

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic: 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian): ͵ρλαφξεʹ
Mayan (base 20): 𝋰·𝋨·𝋲·𝋥
Chinese: 一十三萬一千五百六十五
Chinese (financial): 壹拾參萬壹仟伍佰陸拾伍

In other modern scripts

Eastern Arabic ١٣١٥٦٥ Devanagari १३१५६५ Bengali ১৩১৫৬৫ Tamil ௧௩௧௫௬௫ Thai ๑๓๑๕๖๕ Tibetan ༡༣༡༥༦༥ Khmer ១៣១៥៦៥ Lao ໑໓໑໕໖໕ Burmese ၁၃၁၅၆၅

Also seen as

Unicode codepoint

𠇭

CJK Unified Ideograph-201Ed

U+201ED

Other letter (Lo)

UTF-8 encoding: F0 A0 87 AD (4 bytes).

Lookup U+201ED on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0201ED

RGB(2, 1, 237)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.237.

Address: 0.2.1.237
Class: reserved
IPv4-mapped IPv6: ::ffff:0.2.1.237

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 131,565 and was likely granted around 1872.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Look up US131,565 on Google Patents ↗ Look up on USPTO ↗

Position in π

The digit sequence 131565 first appears in π at position 706,554 of the decimal expansion (the 706,554ordinal-suffix:th digit after the integer 3).

Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.

Look up 131565 on Pi Search ↗