131,621
131,621 is a composite number, odd.
131,621 (one hundred thirty-one thousand six hundred twenty-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 7 × 18,803. Written other ways, in hexadecimal, 0x20225.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 14
- Digit product
- 36
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 126,131
- Recamán's sequence
- a(229,130) = 131,621
- Square (n²)
- 17,324,087,641
- Cube (n³)
- 2,280,213,739,396,061
- Divisor count
- 4
- σ(n) — sum of divisors
- 150,432
- φ(n) — Euler's totient
- 112,812
- Sum of prime factors
- 18,810
Primality
Prime factorization: 7 × 18803
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,621 = [362; (1, 3, 1, 9, 2, 2, 1, 1, 1, 1, 2, 1, 3, 5, 36, 11, 7, 2, 1, 1, 3, 3, 1, 3, …)]
Representations
- In words
- one hundred thirty-one thousand six hundred twenty-one
- Ordinal
- 131621st
- Binary
- 100000001000100101
- Octal
- 401045
- Hexadecimal
- 0x20225
- Base64
- AgIl
- One's complement
- 4,294,835,674 (32-bit)
- Scientific notation
- 1.31621 × 10⁵
- As a duration
- 131,621 s = 1 day, 12 hours, 33 minutes, 41 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλαχκαʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋡·𝋡
- Chinese
- 一十三萬一千六百二十一
- Chinese (financial)
- 壹拾參萬壹仟陸佰貳拾壹
Also seen as
UTF-8 encoding: F0 A0 88 A5 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.2.37.
- Address
- 0.2.2.37
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.2.37
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 131,621 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.