3,123
3,123 is a composite number, odd.
3,123 (three thousand one hundred twenty-three) is an odd 4-digit number. It is a composite number with 6 divisors, and factors as 3² × 347. Written other ways, in Roman numerals it is MMMCXXIII and in binary, 110000110011.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 4
- Digit sum
- 9
- Digit product
- 18
- Digital root
- 9
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 3,213
- Recamán's sequence
- a(1,685) = 3,123
- Square (n²)
- 9,753,129
- Cube (n³)
- 30,459,021,867
- Divisor count
- 6
- σ(n) — sum of divisors
- 4,524
- φ(n) — Euler's totient
- 2,076
- Sum of prime factors
- 353
Primality
Prime factorization: 3 2 × 347
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√3,123 = [55; (1, 7, 1, 1, 1, 1, 5, 1, 1, 1, 1, 7, 1, 110)]
Period length 14 — the block in parentheses repeats forever.
Representations
- In words
- three thousand one hundred twenty-three
- Ordinal
- 3123rd
- Roman numeral
- MMMCXXIII
- Binary
- 110000110011
- Octal
- 6063
- Hexadecimal
- 0xC33
- Base64
- DDM=
- One's complement
- 62,412 (16-bit)
- Scientific notation
- 3.123 × 10³
- As a duration
- 3,123 s = 52 minutes, 3 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓍢𓎆𓎆𓏺𓏺𓏺
- Greek (Milesian)
- ͵γρκγʹ
- Mayan (base 20)
- 𝋧·𝋰·𝋣
- Chinese
- 三千一百二十三
- Chinese (financial)
- 參仟壹佰貳拾參
Digit at this position in famous constants
- π — Pi (π)
- Digit 3,123 = 0
- e — Euler's number (e)
- Digit 3,123 = 6
- φ — Golden ratio (φ)
- Digit 3,123 = 0
- √2 — Pythagoras's (√2)
- Digit 3,123 = 1
- ln 2 — Natural log of 2
- Digit 3,123 = 1
- γ — Euler-Mascheroni (γ)
- Digit 3,123 = 0
Also seen as
UTF-8 encoding: E0 B0 B3 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.12.51.
- Address
- 0.0.12.51
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.12.51
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 3,123 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G7 (3136 Hz, -7¢)
- Scientific pitch (C4 = 256 Hz): G7 (3068.5 Hz, +30¢)
- Baroque pitch (A4 = 415 Hz): G♯7 (3133.7 Hz, -6¢)
The digit sequence 3123 first appears in π at position 3,891 of the decimal expansion (the 3,891ordinal-suffix:st 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°.