131,660
131,660 is a composite number, even.
131,660 (one hundred thirty-one thousand six hundred sixty) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2² × 5 × 29 × 227. Its proper divisors sum to 155,620, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2024C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 17
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 66,131
- Recamán's sequence
- a(229,052) = 131,660
- Square (n²)
- 17,334,355,600
- Cube (n³)
- 2,282,241,258,296,000
- Divisor count
- 24
- σ(n) — sum of divisors
- 287,280
- φ(n) — Euler's totient
- 50,624
- Sum of prime factors
- 265
Primality
Prime factorization: 2 2 × 5 × 29 × 227
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,660 = [362; (1, 5, 1, 1, 1, 14, 6, 4, 7, 1, 2, 1, 3, 3, 4, 1, 7, 6, 7, 1, 4, 3, 3, 1, …)]
Period length 36 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand six hundred sixty
- Ordinal
- 131660th
- Binary
- 100000001001001100
- Octal
- 401114
- Hexadecimal
- 0x2024C
- Base64
- AgJM
- One's complement
- 4,294,835,635 (32-bit)
- Scientific notation
- 1.3166 × 10⁵
- As a duration
- 131,660 s = 1 day, 12 hours, 34 minutes, 20 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλαχξʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋣·𝋠
- Chinese
- 一十三萬一千六百六十
- Chinese (financial)
- 壹拾參萬壹仟陸佰陸拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131660, here are decompositions:
- 19 + 131641 = 131660
- 43 + 131617 = 131660
- 79 + 131581 = 131660
- 163 + 131497 = 131660
- 181 + 131479 = 131660
- 211 + 131449 = 131660
- 223 + 131437 = 131660
- 229 + 131431 = 131660
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 89 8C (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.2.76.
- Address
- 0.2.2.76
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.2.76
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 131,660 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 131660 first appears in π at position 282,078 of the decimal expansion (the 282,078ordinal-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.