131,986
131,986 is a composite number, even.
131,986 (one hundred thirty-one thousand nine hundred eighty-six) is an even 6-digit number. It is a composite number with 4 divisors, and factors as 2 × 65,993. Written other ways, in hexadecimal, 0x20392.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 28
- Digit product
- 1,296
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 689,131
- Recamán's sequence
- a(228,400) = 131,986
- Square (n²)
- 17,420,304,196
- Cube (n³)
- 2,299,236,269,613,256
- Divisor count
- 4
- σ(n) — sum of divisors
- 197,982
- φ(n) — Euler's totient
- 65,992
- Sum of prime factors
- 65,995
Primality
Prime factorization: 2 × 65993
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,986 = [363; (3, 2, 1, 7, 2, 6, 2, 4, 1, 1, 4, 1, 4, 1, 17, 1, 4, 15, 1, 1, 2, 5, 1, 2, …)]
Representations
- In words
- one hundred thirty-one thousand nine hundred eighty-six
- Ordinal
- 131986th
- Binary
- 100000001110010010
- Octal
- 401622
- Hexadecimal
- 0x20392
- Base64
- AgOS
- One's complement
- 4,294,835,309 (32-bit)
- Scientific notation
- 1.31986 × 10⁵
- As a duration
- 131,986 s = 1 day, 12 hours, 39 minutes, 46 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαϡπϛʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋳·𝋦
- Chinese
- 一十三萬一千九百八十六
- Chinese (financial)
- 壹拾參萬壹仟玖佰捌拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131986, here are decompositions:
- 17 + 131969 = 131986
- 47 + 131939 = 131986
- 53 + 131933 = 131986
- 59 + 131927 = 131986
- 137 + 131849 = 131986
- 149 + 131837 = 131986
- 227 + 131759 = 131986
- 347 + 131639 = 131986
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 8E 92 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.3.146.
- Address
- 0.2.3.146
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.3.146
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 131,986 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 131986 first appears in π at position 50,591 of the decimal expansion (the 50,591ordinal-suffix:st 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.