138,131
138,131 is a composite number, odd.
138,131 (one hundred thirty-eight thousand one hundred thirty-one) is an odd 6-digit number. It is a composite number with 6 divisors, and factors as 7² × 2,819. Written other ways, in hexadecimal, 0x21B93.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 72
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 131,831
- Recamán's sequence
- a(492,565) = 138,131
- Square (n²)
- 19,080,173,161
- Cube (n³)
- 2,635,563,398,902,091
- Divisor count
- 6
- σ(n) — sum of divisors
- 160,740
- φ(n) — Euler's totient
- 118,356
- Sum of prime factors
- 2,833
Primality
Prime factorization: 7 2 × 2819
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,131 = [371; (1, 1, 1, 15, 2, 33, 3, 3, 3, 2, 1, 1, 1, 2, 1, 5, 2, 2, 1, 1, 2, 1, 6, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand one hundred thirty-one
- Ordinal
- 138131st
- Binary
- 100001101110010011
- Octal
- 415623
- Hexadecimal
- 0x21B93
- Base64
- AhuT
- One's complement
- 4,294,829,164 (32-bit)
- Scientific notation
- 1.38131 × 10⁵
- As a duration
- 138,131 s = 1 day, 14 hours, 22 minutes, 11 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹 𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρληρλαʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋦·𝋫
- Chinese
- 一十三萬八千一百三十一
- Chinese (financial)
- 壹拾參萬捌仟壹佰參拾壹
Also seen as
UTF-8 encoding: F0 A1 AE 93 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.147.
- Address
- 0.2.27.147
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.147
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 138,131 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 138131 first appears in π at position 320,389 of the decimal expansion (the 320,389ordinal-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.