131,387
131,387 is a composite number, odd.
131,387 (one hundred thirty-one thousand three hundred eighty-seven) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 37 × 53 × 67. Written other ways, in hexadecimal, 0x2013B.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 504
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 783,131
- Square (n²)
- 17,262,543,769
- Cube (n³)
- 2,268,073,838,177,603
- Divisor count
- 8
- σ(n) — sum of divisors
- 139,536
- φ(n) — Euler's totient
- 123,552
- Sum of prime factors
- 157
Primality
Prime factorization: 37 × 53 × 67
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,387 = [362; (2, 8, 1, 10, 1, 3, 1, 18, 1, 3, 1, 10, 1, 8, 2, 724)]
Period length 16 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand three hundred eighty-seven
- Ordinal
- 131387th
- Binary
- 100000000100111011
- Octal
- 400473
- Hexadecimal
- 0x2013B
- Base64
- AgE7
- One's complement
- 4,294,835,908 (32-bit)
- Scientific notation
- 1.31387 × 10⁵
- As a duration
- 131,387 s = 1 day, 12 hours, 29 minutes, 47 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλατπζʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋩·𝋧
- Chinese
- 一十三萬一千三百八十七
- Chinese (financial)
- 壹拾參萬壹仟參佰捌拾柒
Also seen as
UTF-8 encoding: F0 A0 84 BB (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.59.
- Address
- 0.2.1.59
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.59
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 131,387 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 131387 first appears in π at position 952,706 of the decimal expansion (the 952,706ordinal-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.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.