131,370
131,370 is a composite number, even.
131,370 (one hundred thirty-one thousand three hundred seventy) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 3 × 5 × 29 × 151. Its proper divisors sum to 196,950, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x2012A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 73,131
- Square (n²)
- 17,258,076,900
- Cube (n³)
- 2,267,193,562,353,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 328,320
- φ(n) — Euler's totient
- 33,600
- Sum of prime factors
- 190
Primality
Prime factorization: 2 × 3 × 5 × 29 × 151
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√131,370 = [362; (2, 4, 2, 724)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-one thousand three hundred seventy
- Ordinal
- 131370th
- Binary
- 100000000100101010
- Octal
- 400452
- Hexadecimal
- 0x2012A
- Base64
- AgEq
- One's complement
- 4,294,835,925 (32-bit)
- Scientific notation
- 1.3137 × 10⁵
- As a duration
- 131,370 s = 1 day, 12 hours, 29 minutes, 30 seconds
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλατοʹ
- Mayan (base 20)
- 𝋰·𝋨·𝋨·𝋪
- Chinese
- 一十三萬一千三百七十
- Chinese (financial)
- 壹拾參萬壹仟參佰柒拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 131370, here are decompositions:
- 7 + 131363 = 131370
- 13 + 131357 = 131370
- 53 + 131317 = 131370
- 59 + 131311 = 131370
- 67 + 131303 = 131370
- 73 + 131297 = 131370
- 103 + 131267 = 131370
- 139 + 131231 = 131370
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A0 84 AA (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.1.42.
- Address
- 0.2.1.42
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.1.42
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 131,370 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.