Properties of the Number 81344

Eighty-One Thousand Three Hundred Forty-Four

Basics

Value: 81343 → 81344 → 81345

Parity: even

Prime: No

Previous Prime: 81343

Next Prime: 81349

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁶ × 31 × 41

Divisors: 1, 2, 4, 8, 16, 31, 32, 41, 62, 64

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011110111000000

Octal: 236700

Duodecimal: 3B0A8

Hexadecimal: 13dc0

Square: 6616846336

Square Root: 285.2086955196142

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

θ series of any of the 5 extremal odd unimodular 32-dimensional lattices (with minimal norm 4). A29752

Numbers k such that k and k² use only the digits 1, 3, 4, 6 and 8. A137026

Number of walks within N² (the first quadrant of Z²) starting at (0,0) and consisting of n steps taken from {(-1, -1), (0, 1), (1, 0)}. A151278

a(4n+k) = 4a(4n+k-1)-6a(4n+k-2)+4a(4n+k-3), for k = 0,1,2; 2·a(4n+3) = 7a(4n+2)-8(4n+1)+2a(4n), with a(0) = a(1) = a(2) = 0, a(3) = 1. A132152

Let d(n,k) be the n-th divisor of a number k. a(n) is the smallest k such that d(n+1,k+1) = d(n,k) + 1. A285883

Natural numbers in square maze arrangement, read by antidiagonals. A81344