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13,213

13,213 is a composite number, odd.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Arithmetic Number Deficient Number Heptagonal Odious Number Recamán's Sequence Self Number Semiprime Squarefree

Properties

Parity
Odd
Digit count
5
Digit sum
10
Digit product
18
Digital root
1
Palindrome
No
Bit width
14 bits
Reversed
31,231
Recamán's sequence
a(47,849) = 13,213
Square (n²)
174,583,369
Cube (n³)
2,306,770,054,597
Divisor count
4
σ(n) — sum of divisors
13,468
φ(n) — Euler's totient
12,960
Sum of prime factors
254

Primality

Prime factorization: 73 × 181

Nearest primes: 13,187 (−26) · 13,217 (+4)

Divisors & multiples

All divisors (4)
1 · 73 · 181 · 13213
Aliquot sum (sum of proper divisors): 255
Factor pairs (a × b = 13,213)
1 × 13213
73 × 181
First multiples
13,213 · 26,426 (double) · 39,639 · 52,852 · 66,065 · 79,278 · 92,491 · 105,704 · 118,917 · 132,130

Sums & aliquot sequence

As a sum of two squares: 42² + 107² = 53² + 102²
As consecutive integers: 6,606 + 6,607 145 + 146 + … + 217 18 + 19 + … + 163
Aliquot sequence: 13,213 255 177 63 41 1 0 — terminates at zero

Representations

In words
thirteen thousand two hundred thirteen
Ordinal
13213th
Binary
11001110011101
Octal
31635
Hexadecimal
0x339D
Base64
M50=
One's complement
52,322 (16-bit)
In other bases
ternary (3) 200010101
quaternary (4) 3032131
quinary (5) 410323
senary (6) 141101
septenary (7) 53344
nonary (9) 20111
undecimal (11) 9a22
duodecimal (12) 7791
tridecimal (13) 6025
tetradecimal (14) 4b5b
pentadecimal (15) 3dad

Historical numeral systems

Babylonian (base 60)
𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓆼𓆼𓆼𓍢𓍢𓎆𓏺𓏺𓏺
Greek (Milesian)
͵ιγσιγʹ
Mayan (base 20)
𝋡·𝋭·𝋠·𝋭
Chinese
一萬三千二百一十三
Chinese (financial)
壹萬參仟貳佰壹拾參
In other modern scripts
Eastern Arabic ١٣٢١٣ Devanagari १३२१३ Bengali ১৩২১৩ Tamil ௧௩௨௧௩ Thai ๑๓๒๑๓ Tibetan ༡༣༢༡༣ Khmer ១៣២១៣ Lao ໑໓໒໑໓ Burmese ၁၃၂၁၃

Digit at this position in famous constants

π — Pi (π)
Digit 13,213 = 5
e — Euler's number (e)
Digit 13,213 = 3
φ — Golden ratio (φ)
Digit 13,213 = 2
√2 — Pythagoras's (√2)
Digit 13,213 = 6
ln 2 — Natural log of 2
Digit 13,213 = 3
γ — Euler-Mascheroni (γ)
Digit 13,213 = 8

Also seen as

Unicode codepoint
Square Cm
U+339D
Other symbol (So)

UTF-8 encoding: E3 8E 9D (3 bytes).

Hex color
#00339D
RGB(0, 51, 157)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.51.157.

Address
0.0.51.157
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.51.157

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 13213 first appears in π at position 120,931 of the decimal expansion (the 120,931ordinal-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.