21,316
21,316 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 13
- Digit product
- 36
- Digital root
- 4
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 61,312
- Recamán's sequence
- a(41,207) = 21,316
- Square (n²)
- 454,371,856
- Cube (n³)
- 9,685,390,482,496
- Square root (√n)
- 146
- Divisor count
- 9
- σ(n) — sum of divisors
- 37,821
- φ(n) — Euler's totient
- 10,512
- Sum of prime factors
- 150
Primality
Prime factorization: 2 2 × 73 2
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- twenty-one thousand three hundred sixteen
- Ordinal
- 21316th
- Binary
- 101001101000100
- Octal
- 51504
- Hexadecimal
- 0x5344
- Base64
- U0Q=
- One's complement
- 44,219 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓆼𓍢𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵κατιϛʹ
- Mayan (base 20)
- 𝋢·𝋭·𝋥·𝋰
- Chinese
- 二萬一千三百一十六
- Chinese (financial)
- 貳萬壹仟參佰壹拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 21,316 = 6
- e — Euler's number (e)
- Digit 21,316 = 7
- φ — Golden ratio (φ)
- Digit 21,316 = 9
- √2 — Pythagoras's (√2)
- Digit 21,316 = 4
- ln 2 — Natural log of 2
- Digit 21,316 = 7
- γ — Euler-Mascheroni (γ)
- Digit 21,316 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 21316, here are decompositions:
- 3 + 21313 = 21316
- 47 + 21269 = 21316
- 89 + 21227 = 21316
- 137 + 21179 = 21316
- 167 + 21149 = 21316
- 173 + 21143 = 21316
- 227 + 21089 = 21316
- 257 + 21059 = 21316
Showing the first eight; more decompositions exist.
UTF-8 encoding: E5 8D 84 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.83.68.
- Address
- 0.0.83.68
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.83.68
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 21316 first appears in π at position 106,763 of the decimal expansion (the 106,763ordinal-suffix:rd 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.