131,813
131,813 is a composite number, odd.
131,813 (one hundred thirty-one thousand eight hundred thirteen) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 11 × 23 × 521. Written other ways, in hexadecimal, 0x202E5.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 72
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 318,131
- Recamán's sequence
- a(228,746) = 131,813
- Square (n²)
- 17,374,666,969
- Cube (n³)
- 2,290,206,977,184,797
- Divisor count
- 8
- σ(n) — sum of divisors
- 150,336
- φ(n) — Euler's totient
- 114,400
- Sum of prime factors
- 555
Primality
Prime factorization: 11 × 23 × 521
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,813 = [363; (16, 1, 1, 181, 66, 181, 1, 1, 16, 726)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand eight hundred thirteen
- Ordinal
- 131813th
- Binary
- 100000001011100101
- Octal
- 401345
- Hexadecimal
- 0x202E5
- Base64
- AgLl
- One's complement
- 4,294,835,482 (32-bit)
- Scientific notation
- 1.31813 × 10⁵
- As a duration
- 131,813 s = 1 day, 12 hours, 36 minutes, 53 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαωιγʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋪·𝋭
- Chinese
- 一十三萬一千八百一十三
- Chinese (financial)
- 壹拾參萬壹仟捌佰壹拾參
Also seen as
UTF-8 encoding: F0 A0 8B A5 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.2.229.
- Address
- 0.2.2.229
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.2.229
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 131,813 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.