Properties of the Number 31361

Thirty-One Thousand Three Hundred Sixty-One

Basics

Value: 31360 → 31361 → 31362

Parity: odd

Prime: No

Previous Prime: 31357

Next Prime: 31379

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 11 × 2851

Divisors: 1, 11, 2851, 31361

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101010000001

Octal: 75201

Duodecimal: 16195

Hexadecimal: 7a81

Square: 983512321

Square Root: 177.09037240911772

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

Smallest number m such that m²+1 is divisible by A002144(n)² (= squares of primes congruent to 1 mod 4). A59321

Least positive integer k with prime(k)²-2 and prime(prime(k))²-2 both prime such that prime(k·n)²-2 and prime(prime(k·n))²-2 are all prime. A261281

Matrix logarithm of triangle A104980. A104986

a(n) = 1 + ∑_{k=0..floor((n-1)/2)} a(k) * a(n-2·k-1). A351972

a(n) = 40·n² + 1. A158602

Numerator of Laguerre(n, 3). A160625

Strong pseudoprimes to base 45. A20271

Indices of primes in sequence defined by A(0) = 43, A(n) = 10·A(n-1) + 33 for n > 0. A101730

Central coefficient in (1 + x + 2ⁿ*x²)ⁿ. A188140

Number of base 27 circular n-digit numbers with adjacent digits differing by 6 or less. A125415