Live analysis

3,381

3,381 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.).

3,381 (three thousand three hundred eighty-one) is an odd 4-digit number. It is a composite number with 12 divisors, and factors as 3 × 7² × 23. Written other ways, in Roman numerals it is MMMCCCLXXXI and in binary, 110100110101.

Arithmetic Number Cube-Free Deficient Number Odious Number Pernicious Number Recamán's Sequence Self Number

Interestingness

★ ★ ☆ ☆ ☆

4 notable facts · grade D

3,369 3,370 3,371 3,372 3,373 3,374 3,375 3,376 3,377 3,378 3,379 3,380 3,381 3,382 3,383 3,384 3,385 3,386 3,387 3,388 3,389 3,390 3,391 3,392 3,393

less more

Properties

Parity: Odd
Digit count: 4
Digit sum: 15
Digit product: 72
Digital root: 6
Palindrome: No
Bit width: 12 bits
Reversed: 1,833
Recamán's sequence: a(850) = 3,381
Square (n²): 11,431,161
Cube (n³): 38,648,755,341
Divisor count: 12
σ(n) — sum of divisors: 5,472
φ(n) — Euler's totient: 1,848
Sum of prime factors: 40

Primality

Prime factorization: 3 × 7 ² × 23

Nearest primes: 3,373 (−8) · 3,389 (+8)

Divisors & multiples

All divisors (12)

1 · 3 · 7 · 21 · 23 · 49 · 69 · 147 · 161 · 483 · 1127 · 3381

Aliquot sum (sum of proper divisors): 2,091

Factor pairs (a × b = 3,381)

1 × 3381

3 × 1127

7 × 483

21 × 161

23 × 147

49 × 69

First multiples

3,381 · 6,762 (double) · 10,143 · 13,524 · 16,905 · 20,286 · 23,667 · 27,048 · 30,429 · 33,810

Sums & aliquot sequence

As consecutive integers: 1,690 + 1,691 1,126 + 1,127 + 1,128 561 + 562 + 563 + 564 + 565 + 566 480 + 481 + … + 486

Aliquot sequence: 3,381 → 2,091 → 933 → 315 → 309 → 107 → 1 → 0 — terminates at zero

Continued fraction of √n

√3,381 = [58; (6, 1, 4, 1, 22, 2, 3, 28, 1, 3, 1, 2, 5, 2, 5, 2, 1, 3, 1, 28, 3, 2, 22, 1, …)]

Period length 28 — the block in parentheses repeats forever.

Representations

In words: three thousand three hundred eighty-one
Ordinal: 3381st
Roman numeral: MMMCCCLXXXI
Binary: 110100110101
Octal: 6465
Hexadecimal: 0xD35
Base64: DTU=
One's complement: 62,154 (16-bit)
Scientific notation: 3.381 × 10³
As a duration: 3,381 s = 56 minutes, 21 seconds

In other bases

ternary (3) 11122020

quaternary (4) 310311

quinary (5) 102011

senary (6) 23353

septenary (7) 12600

nonary (9) 4566

undecimal (11) 25a4

duodecimal (12) 1b59

tridecimal (13) 1701

tetradecimal (14) 1337

pentadecimal (15) 1006

As an angle

3,381° = 9 × 360° + 141°

141° ≈ 2.461 rad

Compass bearing: SE (southeast)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵γτπαʹ
Mayan (base 20): 𝋨·𝋩·𝋡
Chinese: 三千三百八十一
Chinese (financial): 參仟參佰捌拾壹

In other modern scripts

Eastern Arabic ٣٣٨١ Devanagari ३३८१ Bengali ৩৩৮১ Tamil ௩௩௮௧ Thai ๓๓๘๑ Tibetan ༣༣༨༡ Khmer ៣៣៨១ Lao ໓໓໘໑ Burmese ၃၃၈၁

Digit at this position in famous constants

π — Pi (π): Digit 3,381 = 7
e — Euler's number (e): Digit 3,381 = 6
φ — Golden ratio (φ): Digit 3,381 = 8
√2 — Pythagoras's (√2): Digit 3,381 = 2
ln 2 — Natural log of 2: Digit 3,381 = 2
γ — Euler-Mascheroni (γ): Digit 3,381 = 7

Also seen as

Unicode codepoint

വ

Malayalam Letter Va

U+0D35

Other letter (Lo)

UTF-8 encoding: E0 B4 B5 (3 bytes).

Lookup U+0D35 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000D35

RGB(0, 13, 53)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.13.53.

Address: 0.0.13.53
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.13.53

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

Musical pitch

Heard as a frequency, 3,381 Hz is closest to:

Concert pitch (A4 = 440 Hz): G♯7 (3322.4 Hz, +30¢)
Scientific pitch (C4 = 256 Hz): A7 (3444.3 Hz, -32¢)
Baroque pitch (A4 = 415 Hz): A7 (3320 Hz, +32¢)

Position in π

The digit sequence 3381 first appears in π at position 1,032 of the decimal expansion (the 1,032ordinal-suffix:nd 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 3381 on Pi Search ↗