Live analysis

3,081

3,081 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.).

3,081 (three thousand eighty-one) is an odd 4-digit number. It is a composite number with 8 divisors, and factors as 3 × 13 × 79. It is the 78th triangular number. Written other ways, in Roman numerals it is MMMLXXXI and in binary, 110000001001.

Arithmetic Number Cube-Free Deficient Number Evil Number Recamán's Sequence Sphenic Number Squarefree Triangular

Interestingness

★ ★ ★ ★ ☆

6 notable facts · grade B

3,069 3,070 3,071 3,072 3,073 3,074 3,075 3,076 3,077 3,078 3,079 3,080 3,081 3,082 3,083 3,084 3,085 3,086 3,087 3,088 3,089 3,090 3,091 3,092 3,093

less more

Properties

Parity: Odd
Digit count: 4
Digit sum: 12
Digit product: 0
Digital root: 3
Palindrome: No
Bit width: 12 bits
Reversed: 1,803
Recamán's sequence: a(1,601) = 3,081
Square (n²): 9,492,561
Cube (n³): 29,246,580,441
Divisor count: 8
σ(n) — sum of divisors: 4,480
φ(n) — Euler's totient: 1,872
Sum of prime factors: 95

Primality

Prime factorization: 3 × 13 × 79

Nearest primes: 3,079 (−2) · 3,083 (+2)

Divisors & multiples

All divisors (8)

1 · 3 · 13 · 39 · 79 · 237 · 1027 · 3081

Aliquot sum (sum of proper divisors): 1,399

Factor pairs (a × b = 3,081)

1 × 3081

3 × 1027

13 × 237

39 × 79

First multiples

3,081 · 6,162 (double) · 9,243 · 12,324 · 15,405 · 18,486 · 21,567 · 24,648 · 27,729 · 30,810

Sums & aliquot sequence

As consecutive integers: 1,540 + 1,541 1,026 + 1,027 + 1,028 511 + 512 + 513 + 514 + 515 + 516 231 + 232 + … + 243

Aliquot sequence: 3,081 → 1,399 → 1 → 0 — terminates at zero

Continued fraction of √n

√3,081 = [55; (1, 1, 36, 1, 1, 110)]

Period length 6 — the block in parentheses repeats forever.

Representations

In words: three thousand eighty-one
Ordinal: 3081st
Roman numeral: MMMLXXXI
Binary: 110000001001
Octal: 6011
Hexadecimal: 0xC09
Base64: DAk=
One's complement: 62,454 (16-bit)
Scientific notation: 3.081 × 10³
As a duration: 3,081 s = 51 minutes, 21 seconds

In other bases

ternary (3) 11020010

quaternary (4) 300021

quinary (5) 44311

senary (6) 22133

septenary (7) 11661

nonary (9) 4203

undecimal (11) 2351

duodecimal (12) 1949

tridecimal (13) 1530

tetradecimal (14) 11a1

pentadecimal (15) da6

As an angle

3,081° = 8 × 360° + 201°

201° ≈ 3.508 rad

Compass bearing: SSW (south-southwest)

Why does a circle have 360 degrees? →

Historical numeral systems

Babylonian (base 60): 𒌋𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒁹
Egyptian hieroglyphic: 𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺
Greek (Milesian): ͵γπαʹ
Mayan (base 20): 𝋧·𝋮·𝋡
Chinese: 三千零八十一
Chinese (financial): 參仟零捌拾壹

In other modern scripts

Eastern Arabic ٣٠٨١ Devanagari ३०८१ Bengali ৩০৮১ Tamil ௩௦௮௧ Thai ๓๐๘๑ Tibetan ༣༠༨༡ Khmer ៣០៨១ Lao ໓໐໘໑ Burmese ၃၀၈၁

Digit at this position in famous constants

π — Pi (π): Digit 3,081 = 2
e — Euler's number (e): Digit 3,081 = 0
φ — Golden ratio (φ): Digit 3,081 = 7
√2 — Pythagoras's (√2): Digit 3,081 = 4
ln 2 — Natural log of 2: Digit 3,081 = 1
γ — Euler-Mascheroni (γ): Digit 3,081 = 1

Also seen as

Unicode codepoint

ఉ

Telugu Letter U

U+0C09

Other letter (Lo)

UTF-8 encoding: E0 B0 89 (3 bytes).

Lookup U+0C09 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000C09

RGB(0, 12, 9)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.12.9.

Address: 0.0.12.9
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.12.9

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

Musical pitch

Heard as a frequency, 3,081 Hz is closest to:

Concert pitch (A4 = 440 Hz): G7 (3136 Hz, -31¢)
Scientific pitch (C4 = 256 Hz): G7 (3068.5 Hz, +7¢)
Baroque pitch (A4 = 415 Hz): G♯7 (3133.7 Hz, -29¢)

Position in π

The digit sequence 3081 first appears in π at position 4,855 of the decimal expansion (the 4,855ordinal-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 3081 on Pi Search ↗