131,620
131,620 is a composite number, even.
131,620 (one hundred thirty-one thousand six hundred twenty) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 6,581. Its proper divisors sum to 144,824, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x20224.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 13
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 26,131
- Recamán's sequence
- a(229,132) = 131,620
- Square (n²)
- 17,323,824,400
- Cube (n³)
- 2,280,161,767,528,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 276,444
- φ(n) — Euler's totient
- 52,640
- Sum of prime factors
- 6,590
Primality
Prime factorization: 2 2 × 5 × 6581
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,620 = [362; (1, 3, 1, 6, 1, 3, 7, 3, 2, 1, 180, 1, 2, 3, 7, 3, 1, 6, 1, 3, 1, 724)]
Period length 22 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand six hundred twenty
- Ordinal
- 131620th
- Binary
- 100000001000100100
- Octal
- 401044
- Hexadecimal
- 0x20224
- Base64
- AgIk
- One's complement
- 4,294,835,675 (32-bit)
- Scientific notation
- 1.3162 × 10⁵
- As a duration
- 131,620 s = 1 day, 12 hours, 33 minutes, 40 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ρλαχκʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋡·𝋠
- Chinese
- 一十三萬一千六百二十
- Chinese (financial)
- 壹拾參萬壹仟陸佰貳拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131620, here are decompositions:
- 3 + 131617 = 131620
- 29 + 131591 = 131620
- 59 + 131561 = 131620
- 101 + 131519 = 131620
- 113 + 131507 = 131620
- 131 + 131489 = 131620
- 173 + 131447 = 131620
- 179 + 131441 = 131620
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 88 A4 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.2.36.
- Address
- 0.2.2.36
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.2.36
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 131,620 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.