Properties of the Number 31378

Thirty-One Thousand Three Hundred Seventy-Eight

Basics

Value: 31377 → 31378 → 31379

Parity: even

Prime: No

Previous Prime: 31357

Next Prime: 31379

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 29 × 541

Divisors: 1, 2, 29, 58, 541, 1082, 15689, 31378

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101010010010

Octal: 75222

Duodecimal: 161AA

Hexadecimal: 7a92

Square: 984578884

Square Root: 177.1383639983163

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

Number of nonempty subsets S of {1,2,3,...,n} that have the property that no element·of S is a nonnegative integer linear combination of elements of S-{x}. A103580

Number of partitions of at most n into at most 5 parts. A2622

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 50. A31638

Coefficients of polynomials described below. A174531

a(n) = prime(4·n - 2). A31378