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Properties of the Number 30891

Thirty Thousand Eight Hundred Ninety-One

Basics

Value: 30890 → 30891 → 30892

Parity: odd

Prime: No

Previous Prime: 30881

Next Prime: 30893

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 1471

Divisors: 1, 3, 7, 21, 1471, 4413, 10297, 30891

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100010101011

Octal: 74253

Duodecimal: 15A63

Hexadecimal: 78ab

Square: 954253881

Square Root: 175.7583568425695

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

Consecutive states of the linear congruential pseudo-random number generator 20403·s mod 215 when started at s=1. A384196
Second elementary symmetric function of the first n terms of (2,2,3,3,4,4,5,5...). A203299
Expansion of 1/((1-4x)(1-5x)(1-10x)). A18912
a(n) is the number of positive integer solutions of n·x*y·z*v·w = (x + n) * (y + n) * (z + n) * (v + n) * (w + n), x <= y <= z <= v <= w. A381644
Number of series-reduced planted trees with n+9 nodes and 4 internal nodes. A1860
Number of 2 X n arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 2 X n array. A220011
Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 563", based on the 5-celled von Neumann neighborhood. A272941
Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 605", based on the 5-celled von Neumann neighborhood. A273177
a(n) = n * (7·binomial(n, 2) + 1). A329530
[ exp(9/17)*n! ]. A30891