138,331
138,331 is a composite number, odd.
138,331 (one hundred thirty-eight thousand three hundred thirty-one) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 43 × 3,217. Written other ways, in hexadecimal, 0x21C5B.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 216
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 133,831
- Recamán's sequence
- a(492,165) = 138,331
- Square (n²)
- 19,135,465,561
- Cube (n³)
- 2,647,028,086,518,691
- Divisor count
- 4
- σ(n) — sum of divisors
- 141,592
- φ(n) — Euler's totient
- 135,072
- Sum of prime factors
- 3,260
Primality
Prime factorization: 43 × 3217
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,331 = [371; (1, 13, 27, 2, 11, 3, 6, 4, 1, 34, 1, 1, 1, 1, 1, 1, 21, 3, 1, 4, 4, 1, 5, 1, …)]
Period length 54 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand three hundred thirty-one
- Ordinal
- 138331st
- Binary
- 100001110001011011
- Octal
- 416133
- Hexadecimal
- 0x21C5B
- Base64
- Ahxb
- One's complement
- 4,294,828,964 (32-bit)
- Scientific notation
- 1.38331 × 10⁵
- As a duration
- 138,331 s = 1 day, 14 hours, 25 minutes, 31 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓏺
- Greek (Milesian)
- ͵ρλητλαʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋰·𝋫
- Chinese
- 一十三萬八千三百三十一
- Chinese (financial)
- 壹拾參萬捌仟參佰參拾壹
Also seen as
UTF-8 encoding: F0 A1 B1 9B (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.28.91.
- Address
- 0.2.28.91
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.28.91
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 138,331 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.