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131,825

131,825 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.).

131,825 (one hundred thirty-one thousand eight hundred twenty-five) is an odd 6-digit number. It is a composite number with 6 divisors, and factors as 5² × 5,273. Written other ways, in hexadecimal, 0x202F1.

Arithmetic Number Cube-Free Deficient Number Odious Number Pernicious Number Recamán's Sequence

Interestingness

Properties

Parity
Odd
Digit count
6
Digit sum
20
Digit product
240
Digital root
2
Palindrome
No
Bit width
18 bits
Reversed
528,131
Recamán's sequence
a(228,722) = 131,825
Square (n²)
17,377,830,625
Cube (n³)
2,290,832,522,140,625
Divisor count
6
σ(n) — sum of divisors
163,494
φ(n) — Euler's totient
105,440
Sum of prime factors
5,283

Primality

Prime factorization: 5 2 × 5273

Nearest primes: 131,797 (−28) · 131,837 (+12)

Divisors & multiples

All divisors (6)
1 · 5 · 25 · 5273 · 26365 · 131825
Aliquot sum (sum of proper divisors): 31,669
Factor pairs (a × b = 131,825)
1 × 131825
5 × 26365
25 × 5273
First multiples
131,825 · 263,650 (double) · 395,475 · 527,300 · 659,125 · 790,950 · 922,775 · 1,054,600 · 1,186,425 · 1,318,250

Sums & aliquot sequence

As a sum of two squares: 89² + 352² = 140² + 335² = 184² + 313²
As consecutive integers: 65,912 + 65,913 26,363 + 26,364 + 26,365 + 26,366 + 26,367 13,178 + 13,179 + … + 13,187 5,261 + 5,262 + … + 5,285
Aliquot sequence: 131,825 31,669 2,891 529 24 36 55 17 1 0 — terminates at zero

Continued fraction of √n

√131,825 = [363; (12, 1, 28, 8, 8, 28, 1, 12, 726)]

Period length 9 — the block in parentheses repeats forever.

Representations

In words
one hundred thirty-one thousand eight hundred twenty-five
Ordinal
131825th
Binary
100000001011110001
Octal
401361
Hexadecimal
0x202F1
Base64
AgLx
One's complement
4,294,835,470 (32-bit)
Scientific notation
1.31825 × 10⁵
As a duration
131,825 s = 1 day, 12 hours, 37 minutes, 5 seconds
In other bases
ternary (3) 20200211102
quaternary (4) 200023301
quinary (5) 13204300
senary (6) 2454145
septenary (7) 1056221
nonary (9) 220742
undecimal (11) 90051
duodecimal (12) 64355
tridecimal (13) 48005
tetradecimal (14) 36081
pentadecimal (15) 290d5

Historical numeral systems

Babylonian (base 60)
𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵ρλαωκεʹ
Mayan (base 20)
𝋰·𝋩·𝋫·𝋥
Chinese
一十三萬一千八百二十五
Chinese (financial)
壹拾參萬壹仟捌佰貳拾伍
In other modern scripts
Eastern Arabic ١٣١٨٢٥ Devanagari १३१८२५ Bengali ১৩১৮২৫ Tamil ௧௩௧௮௨௫ Thai ๑๓๑๘๒๕ Tibetan ༡༣༡༨༢༥ Khmer ១៣១៨២៥ Lao ໑໓໑໘໒໕ Burmese ၁၃၁၈၂၅

Also seen as

Unicode codepoint
𠋱
CJK Unified Ideograph-202F1
U+202F1
Other letter (Lo)

UTF-8 encoding: F0 A0 8B B1 (4 bytes).

Hex color
#0202F1
RGB(2, 2, 241)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.2.2.241.

Address
0.2.2.241
Class
reserved
IPv4-mapped IPv6
::ffff:0.2.2.241

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 131,825 and was likely granted around 1872.

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

Position in π

The digit sequence 131825 first appears in π at position 175,271 of the decimal expansion (the 175,271ordinal-suffix:st 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.

Related reading

  • Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.