131,564
131,564 is a composite number, even.
131,564 (one hundred thirty-one thousand five hundred sixty-four) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 31 × 1,061. Written other ways, in hexadecimal, 0x201EC.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 20
- Digit product
- 360
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 465,131
- Recamán's sequence
- a(229,244) = 131,564
- Square (n²)
- 17,309,086,096
- Cube (n³)
- 2,277,252,603,134,144
- Divisor count
- 12
- σ(n) — sum of divisors
- 237,888
- φ(n) — Euler's totient
- 63,600
- Sum of prime factors
- 1,096
Primality
Prime factorization: 2 2 × 31 × 1061
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,564 = [362; (1, 2, 1, 1, 5, 1, 2, 1, 3, 1, 15, 1, 2, 3, 5, 28, 1, 4, 1, 5, 6, 7, 3, 6, …)]
Representations
- In words
- one hundred thirty-one thousand five hundred sixty-four
- Ordinal
- 131564th
- Binary
- 100000000111101100
- Octal
- 400754
- Hexadecimal
- 0x201EC
- Base64
- AgHs
- One's complement
- 4,294,835,731 (32-bit)
- Scientific notation
- 1.31564 × 10⁵
- As a duration
- 131,564 s = 1 day, 12 hours, 32 minutes, 44 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαφξδʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋲·𝋤
- Chinese
- 一十三萬一千五百六十四
- Chinese (financial)
- 壹拾參萬壹仟伍佰陸拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131564, here are decompositions:
- 3 + 131561 = 131564
- 67 + 131497 = 131564
- 127 + 131437 = 131564
- 151 + 131413 = 131564
- 193 + 131371 = 131564
- 271 + 131293 = 131564
- 313 + 131251 = 131564
- 421 + 131143 = 131564
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 87 AC (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.236.
- Address
- 0.2.1.236
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.236
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 131,564 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 131564 first appears in π at position 814,562 of the decimal expansion (the 814,562ordinal-suffix:nd 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.