Properties of the Number -3181

One Hundred Eighty-One

Basics

Value: -3182 → -3181 → -3180

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 3181

Divisors: 1, 3181

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -110001101101

Octal: -6155

Duodecimal: -1A11

Hexadecimal: -c6d

Square: 10118761

Square Root: 56.4003546088143

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 267", based on the 5-celled von Neumann neighborhood. A271086

Numbers n such that (23ⁿ - 1)/22 is prime. A204940

Primes whose decimal representation is a valid number in base 9 and interpreted as such is again a prime. A235395

Primes with 7 as smallest primitive root. A1126

Primes that become another prime under the map 8 <-> 9 (acting on the decimal digits). A175789

Primes of the form x² + 45y². A107152

First member of a prime triple in a 2p-1 progression. A57326

Primes whose base-5 representation also is the base-4 representation of a prime. A235615

Primes with first digit 3. A45709

Number of unimodal functions [1..n]->[0..2]. A223718