Live analysis

131,390

131,390 is a composite number, even.

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.).

131,390 (one hundred thirty-one thousand three hundred ninety) is an even 6-digit number. It is a composite number with 16 divisors, and factors as 2 × 5 × 7 × 1,877. Its proper divisors sum to 139,042, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2013E.

Abundant Number Arithmetic Number Cube-Free Gapful Number Odious Number Pernicious Number Squarefree Weird Number

Interestingness

★ ★ ★ ☆ ☆

5 notable facts · grade C

131,378 131,379 131,380 131,381 131,382 131,383 131,384 131,385 131,386 131,387 131,388 131,389 131,390 131,391 131,392 131,393 131,394 131,395 131,396 131,397 131,398 131,399 131,400 131,401 131,402

less more

Properties

Parity: Even
Digit count: 6
Digit sum: 17
Digit product: 0
Digital root: 8
Palindrome: No
Bit width: 18 bits
Reversed: 93,131
Square (n²): 17,263,332,100
Cube (n³): 2,268,229,204,619,000
Divisor count: 16
σ(n) — sum of divisors: 270,432
φ(n) — Euler's totient: 45,024
Sum of prime factors: 1,891

Primality

Prime factorization: 2 × 5 × 7 × 1877

Nearest primes: 131,381 (−9) · 131,413 (+23)

Divisors & multiples

All divisors (16)

1 · 2 · 5 · 7 · 10 · 14 · 35 · 70 · 1877 · 3754 · 9385 · 13139 · 18770 · 26278 · 65695 (half) · 131390

Aliquot sum (sum of proper divisors): 139,042

Factor pairs (a × b = 131,390)

1 × 131390

2 × 65695

5 × 26278

7 × 18770

10 × 13139

14 × 9385

35 × 3754

70 × 1877

First multiples

131,390 · 262,780 (double) · 394,170 · 525,560 · 656,950 · 788,340 · 919,730 · 1,051,120 · 1,182,510 · 1,313,900

Sums & aliquot sequence

As consecutive integers: 32,846 + 32,847 + 32,848 + 32,849 26,276 + 26,277 + 26,278 + 26,279 + 26,280 18,767 + 18,768 + … + 18,773 6,560 + 6,561 + … + 6,579

Aliquot sequence: 131,390 → 139,042 → 80,558 → 42,994 → 33,614 → 25,210 → 20,186 → 10,096 → 9,496 → 8,324 → 6,250 → 5,468 → 4,108 → 3,732 → 5,004 → 7,736 → 6,784 — unresolved within range

Continued fraction of √n

√131,390 = [362; (2, 10, 1, 1, 1, 7, 1, 3, 2, 2, 7, 3, 3, 3, 11, 1, 1, 2, 1, 1, 3, 2, 2, 1, …)]

Representations

In words: one hundred thirty-one thousand three hundred ninety
Ordinal: 131390th
Binary: 100000000100111110
Octal: 400476
Hexadecimal: 0x2013E
Base64: AgE+
One's complement: 4,294,835,905 (32-bit)
Scientific notation: 1.3139 × 10⁵
As a duration: 131,390 s = 1 day, 12 hours, 29 minutes, 50 seconds

In other bases

ternary (3) 20200020022

quaternary (4) 200010332

quinary (5) 13201030

senary (6) 2452142

septenary (7) 1055030

nonary (9) 220208

undecimal (11) 8a796

duodecimal (12) 64052

tridecimal (13) 47a5c

tetradecimal (14) 35c50

pentadecimal (15) 28de5

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
Egyptian hieroglyphic: 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
Greek (Milesian): ͵ρλατϟʹ
Mayan (base 20): 𝋰·𝋨·𝋩·𝋪
Chinese: 一十三萬一千三百九十
Chinese (financial): 壹拾參萬壹仟參佰玖拾

In other modern scripts

Eastern Arabic ١٣١٣٩٠ Devanagari १३१३९० Bengali ১৩১৩৯০ Tamil ௧௩௧௩௯௦ Thai ๑๓๑๓๙๐ Tibetan ༡༣༡༣༩༠ Khmer ១៣១៣៩០ Lao ໑໓໑໓໙໐ Burmese ၁၃၁၃၉၀

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131390, here are decompositions:

19 + 131371 = 131390
73 + 131317 = 131390
79 + 131311 = 131390
97 + 131293 = 131390
139 + 131251 = 131390
241 + 131149 = 131390
277 + 131113 = 131390
331 + 131059 = 131390

Showing the first eight; more decompositions exist.

Unicode codepoint

𠄾

CJK Unified Ideograph-2013E

U+2013E

Other letter (Lo)

UTF-8 encoding: F0 A0 84 BE (4 bytes).

Lookup U+2013E on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#02013E

RGB(2, 1, 62)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.62.

Address: 0.2.1.62
Class: reserved
IPv4-mapped IPv6: ::ffff:0.2.1.62

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 131,390 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 US131,390 on Google Patents ↗ Look up on USPTO ↗