Properties of the Number 31895

Thirty-One Thousand Eight Hundred Ninety-Five

Basics

Value: 31894 → 31895 → 31896

Parity: odd

Prime: No

Previous Prime: 31891

Next Prime: 31907

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 × 6379

Divisors: 1, 5, 6379, 31895

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 111110010010111

Octal: 76227

Duodecimal: 1655B

Hexadecimal: 7c97

Square: 1017291025

Square Root: 178.5917131336166

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

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock having x11-x00 less than x10-x01. A251065

Number of total dominating sets in the n-Apollonian network. A347479

Irregular triangle read by rows: T(n,k), n>=1, k>=1, in which column k lists the numbers of A353689 multiplied by A000330(k), and the first element of column k is in row A000217(k). A353690

Number of (n+2) X 7 0..2 matrices with each 3 X 3 subblock idempotent. A224603

Number of (n+1)X(2+1) 0..2 arrays with no 2X2 subblock having x11-x00 less than x10-x01. A251059

Number of (3+1)X(n+1) 0..2 arrays with no 2X2 subblock having x11-x00 less than x10-x01. A251067

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 467", based on the 5-celled von Neumann neighborhood. A272320

Number of ways to place zero or more nonadjacent 2,0 3,0 4,1 4,2 4,3 4,4 5,1 6,2 polyhexes in any orientation on a planar nXnXn triangular grid. A155444

G.f. satisfies: A(x) = 1 + x·A(x)*A(-x) + x²*A(x)²*A(-x)². A143926

Lucky numbers with size of gaps equal to 12 (upper terms). A31895