131,430
131,430 is a composite number, even.
131,430 (one hundred thirty-one thousand four hundred thirty) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 3 × 5 × 13 × 337. Its proper divisors sum to 209,274, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x20166.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 12
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 34,131
- Recamán's sequence
- a(229,512) = 131,430
- Square (n²)
- 17,273,844,900
- Cube (n³)
- 2,270,301,435,207,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 340,704
- φ(n) — Euler's totient
- 32,256
- Sum of prime factors
- 360
Primality
Prime factorization: 2 × 3 × 5 × 13 × 337
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,430 = [362; (1, 1, 7, 7, 1, 1, 2, 1, 1, 1, 1, 1, 2, 3, 18, 3, 2, 1, 1, 1, 1, 1, 2, 1, …)]
Period length 30 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand four hundred thirty
- Ordinal
- 131430th
- Binary
- 100000000101100110
- Octal
- 400546
- Hexadecimal
- 0x20166
- Base64
- AgFm
- One's complement
- 4,294,835,865 (32-bit)
- Scientific notation
- 1.3143 × 10⁵
- As a duration
- 131,430 s = 1 day, 12 hours, 30 minutes, 30 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλαυλʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋫·𝋪
- Chinese
- 一十三萬一千四百三十
- Chinese (financial)
- 壹拾參萬壹仟肆佰參拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131430, here are decompositions:
- 17 + 131413 = 131430
- 59 + 131371 = 131430
- 67 + 131363 = 131430
- 73 + 131357 = 131430
- 109 + 131321 = 131430
- 113 + 131317 = 131430
- 127 + 131303 = 131430
- 137 + 131293 = 131430
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 85 A6 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.102.
- Address
- 0.2.1.102
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.102
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 131,430 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 131430 first appears in π at position 892,867 of the decimal expansion (the 892,867ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.