131,998
131,998 is a composite number, even.
131,998 (one hundred thirty-one thousand nine hundred ninety-eight) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 31 × 2,129. Written other ways, in hexadecimal, 0x2039E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 31
- Digit product
- 1,944
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 899,131
- Recamán's sequence
- a(228,376) = 131,998
- Square (n²)
- 17,423,472,004
- Cube (n³)
- 2,299,863,457,583,992
- Divisor count
- 8
- σ(n) — sum of divisors
- 204,480
- φ(n) — Euler's totient
- 63,840
- Sum of prime factors
- 2,162
Primality
Prime factorization: 2 × 31 × 2129
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,998 = [363; (3, 5, 1, 4, 1, 2, 2, 1, 1, 2, 3, 40, 13, 1, 2, 5, 1, 1, 1, 37, 1, 1, 2, 8, …)]
Representations
- In words
- one hundred thirty-one thousand nine hundred ninety-eight
- Ordinal
- 131998th
- Binary
- 100000001110011110
- Octal
- 401636
- Hexadecimal
- 0x2039E
- Base64
- AgOe
- One's complement
- 4,294,835,297 (32-bit)
- Scientific notation
- 1.31998 × 10⁵
- As a duration
- 131,998 s = 1 day, 12 hours, 39 minutes, 58 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρλαϡϟηʹ
- Mayan (base 20)
- 𝋰·𝋩·𝋳·𝋲
- Chinese
- 一十三萬一千九百九十八
- Chinese (financial)
- 壹拾參萬壹仟玖佰玖拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131998, here are decompositions:
- 29 + 131969 = 131998
- 59 + 131939 = 131998
- 71 + 131927 = 131998
- 89 + 131909 = 131998
- 107 + 131891 = 131998
- 137 + 131861 = 131998
- 149 + 131849 = 131998
- 227 + 131771 = 131998
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 8E 9E (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.3.158.
- Address
- 0.2.3.158
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.3.158
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 131,998 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 131998 first appears in π at position 483,764 of the decimal expansion (the 483,764ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.