131,908
131,908 is a composite number, even.
131,908 (one hundred thirty-one thousand nine hundred eight) is an even 6-digit number. It is a composite number with 18 divisors, and factors as 2² × 7² × 673. Its proper divisors sum to 137,018, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x20344.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 22
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 809,131
- Recamán's sequence
- a(228,556) = 131,908
- Square (n²)
- 17,399,720,464
- Cube (n³)
- 2,295,162,326,965,312
- Divisor count
- 18
- σ(n) — sum of divisors
- 268,926
- φ(n) — Euler's totient
- 56,448
- Sum of prime factors
- 691
Primality
Prime factorization: 2 2 × 7 2 × 673
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,908 = [363; (5, 4, 2, 5, 4, 2, 1, 1, 2, 24, 1, 1, 1, 22, 26, 1, 6, 11, 4, 1, 5, 1, 2, 1, …)]
Period length 46 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand nine hundred eight
- Ordinal
- 131908th
- Binary
- 100000001101000100
- Octal
- 401504
- Hexadecimal
- 0x20344
- Base64
- AgNE
- One's complement
- 4,294,835,387 (32-bit)
- Scientific notation
- 1.31908 × 10⁵
- As a duration
- 131,908 s = 1 day, 12 hours, 38 minutes, 28 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαϡηʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋯·𝋨
- Chinese
- 一十三萬一千九百零八
- Chinese (financial)
- 壹拾參萬壹仟玖佰零捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131908, here are decompositions:
- 17 + 131891 = 131908
- 47 + 131861 = 131908
- 59 + 131849 = 131908
- 71 + 131837 = 131908
- 131 + 131777 = 131908
- 137 + 131771 = 131908
- 149 + 131759 = 131908
- 197 + 131711 = 131908
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 8D 84 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.3.68.
- Address
- 0.2.3.68
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.3.68
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 131,908 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 131908 first appears in π at position 445,479 of the decimal expansion (the 445,479ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.