Properties of the Number 31682

Thirty-One Thousand Six Hundred Eighty-Two

Basics

Value: 31681 → 31682 → 31683

Parity: even

Prime: No

Previous Prime: 31667

Next Prime: 31687

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 7 × 31 × 73

Divisors: 1, 2, 7, 14, 31, 62, 73, 146, 217, 434

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101111000010

Octal: 75702

Duodecimal: 16402

Hexadecimal: 7bc2

Square: 1003749124

Square Root: 177.99438193381272

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

Squarefree integers m > 1 such that if prime p divides m, then s_p(m) >= p and s_p(m) == 2 (mod p-1), where s_p(m) is the sum of the base p digits of m. A324404

a(n) = F(n)² + F(n+1)² + F(n+2)², where F(n) denotes the n-th Fibonacci number. A127546

Numbers k such that k + A067666(k) is a square. A386257

Sum of the asymmetry degrees of all compositions of n with parts in {1,2,4,6,8,10,...}. A276054

Expansion of (1-x-x²+2·x³) / ((1-x)*(1+x)*(1-3·x+x²)). A38990

Numbers k such that k = x + y, sigma₁(k) = sigma₁(x) + sigma₁(y) and sigma₂(k) = sigma₂(x) + sigma₂(y). A219033

a(n) = A000045(n)*A000045(n+1) mod A000032(n). A357553

Table read by antidiagonals: T(n,k) (n >= 3, k >= 1) is the number of regions formed in a regular n-gon by straight line segments when connecting the n corner vertices to the points dividing the sides into k equal parts. A356044

Number of ways to arrange 6 indistinguishable points on an n X n X n triangular grid so that no three points are in the same row or diagonal. A194478

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 94. A31682