Properties of the Number 31998

Thirty-One Thousand Nine Hundred Ninety-Eight

Basics

Value: 31997 → 31998 → 31999

Parity: even

Prime: No

Previous Prime: 31991

Next Prime: 32003

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5333

Divisors: 1, 2, 3, 6, 5333, 10666, 15999, 31998

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111110011111110

Octal: 76376

Duodecimal: 16626

Hexadecimal: 7cfe

Square: 1023872004

Square Root: 178.8798479426903

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 distributive lattices; also number of paths with n turns when light is reflected from 8 glass plates. A30112

a(n) = (n+1)*(n+2)*(61·n⁴ + 366·n³ + 845·n² + 888·n + 360)/720. A108675

Numbers k such that the first 9 digits of the k-th Lucas number are 1-9 pandigital. A216489

Triangle T(n,k) (n >= 1 and 1 <= k <= n) read by rows, arising from the Mosaic Problem. A364440

Table read by ascending antidiagonals: T(n, m) giving total degree of n-th-order elementary symmetric polynomials in m variables. A50446

Table T(n,m) giving total degree of n-th-order elementary symmetric polynomials in m variables, -1 <= n, 1 <= m, transposed and read by upward antidiagonals. A50447

Molien series for complete weight enumerators of Euclidean self-dual codes over the Galois ring GR(4,2). A99720

Duplicate of A023759. A31998