Properties of the Number 31982

Thirty-One Thousand Nine Hundred Eighty-Two

Basics

Value: 31981 → 31982 → 31983

Parity: even

Prime: No

Previous Prime: 31981

Next Prime: 31991

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 15991

Divisors: 1, 2, 15991, 31982

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111110011101110

Octal: 76356

Duodecimal: 16612

Hexadecimal: 7cee

Square: 1022848324

Square Root: 178.83511959344003

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

Numbers n such that 30·n+{1,7,11,13,17,19,29} are all prime. A100423

Smallest even number k such that lpf(k-3) = prime(n) while lpf(k-1) > lpf(k-3), where lpf=least prime factor (A020639). A242490

Numbers n such that 30·n+7, 30·n+11, 30·n+13, 30·n+17, 30·n+19 are consecutive primes. A89157

Numbers k such that there are exactly 7 primes between 30·k and 30·k+30. A385124

Number of "forceless" (or "useless") sequences in n-column Nonogram puzzle. A304179

a(n) = 1(01)^2·n+1. A31982