Number

3,391

3,391 is a prime, odd.

Arithmetic Number Deficient Number Emirp Happy Number Odious Number Prime Recamán's Sequence Squarefree Twin Prime

Properties

Parity: Odd
Digit count: 4
Digit sum: 16
Digit product: 81
Digital root: 7
Palindrome: No
Bit width: 12 bits
Reversed: 1,933
Recamán's sequence: a(15,109) = 3,391
Square (n²): 11,498,881
Cube (n³): 38,992,705,471
Divisor count: 2
σ(n) — sum of divisors: 3,392
φ(n) — Euler's totient: 3,390

Primality

3,391 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)

1 · 3391

Aliquot sum (sum of proper divisors): 1

Factor pairs (a × b = 3,391)

1 × 3391

First multiples

3,391 · 6,782 (double) · 10,173 · 13,564 · 16,955 · 20,346 · 23,737 · 27,128 · 30,519 · 33,910

Sums & aliquot sequence

As consecutive integers: 1,695 + 1,696

Representations

In words: three thousand three hundred ninety-one
Ordinal: 3391st
Roman numeral: MMMCCCXCI
Binary: 110100111111
Octal: 6477
Hexadecimal: 0xD3F
Base64: DT8=
One's complement: 62,144 (16-bit)

In other bases

ternary (3) 11122121

quaternary (4) 310333

quinary (5) 102031

senary (6) 23411

septenary (7) 12613

nonary (9) 4577

undecimal (11) 2603

duodecimal (12) 1b67

tridecimal (13) 170b

tetradecimal (14) 1343

pentadecimal (15) 1011

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵γτϟαʹ
Mayan (base 20): 𝋨·𝋩·𝋫
Chinese: 三千三百九十一
Chinese (financial): 參仟參佰玖拾壹

In other modern scripts

Eastern Arabic ٣٣٩١ Devanagari ३३९१ Bengali ৩৩৯১ Tamil ௩௩௯௧ Thai ๓๓๙๑ Tibetan ༣༣༩༡ Khmer ៣៣៩១ Lao ໓໓໙໑ Burmese ၃၃၉၁

Digit at this position in famous constants

π — Pi (π): Digit 3,391 = 2
e — Euler's number (e): Digit 3,391 = 3
φ — Golden ratio (φ): Digit 3,391 = 7
√2 — Pythagoras's (√2): Digit 3,391 = 7
ln 2 — Natural log of 2: Digit 3,391 = 5
γ — Euler-Mascheroni (γ): Digit 3,391 = 8

Also seen as

Prime neighborhood

Adjacent primes:

Previous prime: 3,389 (gap of 2)
Next prime: 3,407 (gap of 16)

Pair status: twin with 3389.

Unicode codepoint

ി

Malayalam Vowel Sign I

U+0D3F

Spacing combining mark (Mc)

UTF-8 encoding: E0 B4 BF (3 bytes).

Lookup U+0D3F on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000D3F

RGB(0, 13, 63)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.13.63.

Address: 0.0.13.63
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.13.63

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

Position in π

The digit sequence 3391 first appears in π at position 5,588 of the decimal expansion (the 5,588ordinal-suffix:th 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.

Look up 3391 on Pi Search ↗