131,131
131,131 is a composite number, odd.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 10
- Digit product
- 9
- Digital root
- 1
- Palindrome
- Yes
- Bit width
- 18 bits
- Square (n²)
- 17,195,339,161
- Cube (n³)
- 2,254,842,019,521,091
- Divisor count
- 16
- σ(n) — sum of divisors
- 177,408
- φ(n) — Euler's totient
- 93,600
- Sum of prime factors
- 162
Primality
Prime factorization: 7 × 11 × 13 × 131
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,131 = [362; (8, 3, 10, 1, 1, 1, 7, 1, 2, 80, 8, 28, 1, 5, 2, 3, 1, 12, 1, 8, 72, 3, 4, 1, …)]
Period length 58 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand one hundred thirty-one
- Ordinal
- 131131st
- Binary
- 100000000000111011
- Octal
- 400073
- Hexadecimal
- 0x2003B
- Base64
- AgA7
- One's complement
- 4,294,836,164 (32-bit)
- Scientific notation
- 1.31131 × 10⁵
- As a duration
- 131,131 s = 1 day, 12 hours, 25 minutes, 31 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλαρλαʹ
- Mayan (base 20)
- 𝋰·𝋧·𝋰·𝋫
- Chinese
- 一十三萬一千一百三十一
- Chinese (financial)
- 壹拾參萬壹仟壹佰參拾壹
Also seen as
UTF-8 encoding: F0 A0 80 BB (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.0.59.
- Address
- 0.2.0.59
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.0.59
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 131,131 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 131131 first appears in π at position 127,905 of the decimal expansion (the 127,905ordinal-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.