131,987
131,987 is a composite number, odd.
131,987 (one hundred thirty-one thousand nine hundred eighty-seven) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 89 × 1,483. Written other ways, in hexadecimal, 0x20393.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 29
- Digit product
- 1,512
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 789,131
- Recamán's sequence
- a(228,398) = 131,987
- Square (n²)
- 17,420,568,169
- Cube (n³)
- 2,299,288,530,921,803
- Divisor count
- 4
- σ(n) — sum of divisors
- 133,560
- φ(n) — Euler's totient
- 130,416
- Sum of prime factors
- 1,572
Primality
Prime factorization: 89 × 1483
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,987 = [363; (3, 3, 65, 1, 3, 13, 2, 5, 1, 1, 10, 3, 3, 3, 21, 14, 1, 3, 1, 1, 2, 1, 1, 1, …)]
Representations
- In words
- one hundred thirty-one thousand nine hundred eighty-seven
- Ordinal
- 131987th
- Binary
- 100000001110010011
- Octal
- 401623
- Hexadecimal
- 0x20393
- Base64
- AgOT
- One's complement
- 4,294,835,308 (32-bit)
- Scientific notation
- 1.31987 × 10⁵
- As a duration
- 131,987 s = 1 day, 12 hours, 39 minutes, 47 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαϡπζʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋳·𝋧
- Chinese
- 一十三萬一千九百八十七
- Chinese (financial)
- 壹拾參萬壹仟玖佰捌拾柒
Also seen as
UTF-8 encoding: F0 A0 8E 93 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.3.147.
- Address
- 0.2.3.147
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.3.147
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 131,987 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 131987 first appears in π at position 642,514 of the decimal expansion (the 642,514ordinal-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.