139,231
139,231 is a composite number, odd.
139,231 (one hundred thirty-nine thousand two hundred thirty-one) is an odd 6-digit number. It is a composite number with 8 divisors, and factors as 37 × 53 × 71. Written other ways, in hexadecimal, 0x21FDF.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 162
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 132,931
- Recamán's sequence
- a(490,365) = 139,231
- Square (n²)
- 19,385,271,361
- Cube (n³)
- 2,699,030,716,863,391
- Divisor count
- 8
- σ(n) — sum of divisors
- 147,744
- φ(n) — Euler's totient
- 131,040
- Sum of prime factors
- 161
Primality
Prime factorization: 37 × 53 × 71
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√139,231 = [373; (7, 3, 5, 1, 2, 1, 67, 9, 1, 2, 10, 3, 6, 6, 106, 2, 4, 3, 6, 2, 9, 9, 1, 1, …)]
Representations
- In words
- one hundred thirty-nine thousand two hundred thirty-one
- Ordinal
- 139231st
- Binary
- 100001111111011111
- Octal
- 417737
- Hexadecimal
- 0x21FDF
- Base64
- Ah/f
- One's complement
- 4,294,828,064 (32-bit)
- Scientific notation
- 1.39231 × 10⁵
- As a duration
- 139,231 s = 1 day, 14 hours, 40 minutes, 31 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλθσλαʹ
- Mayan (base 20)
- 𝋱·𝋨·𝋡·𝋫
- Chinese
- 一十三萬九千二百三十一
- Chinese (financial)
- 壹拾參萬玖仟貳佰參拾壹
Also seen as
UTF-8 encoding: F0 A1 BF 9F (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.31.223.
- Address
- 0.2.31.223
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.31.223
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 139,231 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.