Properties of the Number 31441

Thirty-One Thousand Four Hundred Forty-One

Basics

Value: 31440 → 31441 → 31442

Parity: odd

Prime: No

Previous Prime: 31397

Next Prime: 31469

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 23 × 1367

Divisors: 1, 23, 1367, 31441

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101011010001

Octal: 75321

Duodecimal: 16241

Hexadecimal: 7ad1

Square: 988536481

Square Root: 177.31610191970722

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

a(n) = 18·a(n-1) - 79·a(n-2) for n > 1; a(0) = 1, a(1) = 17. A164600

Consecutive states of the linear congruential pseudo-random number generator for 16-bit WATFOR/WATFIV when started at 1. A384158

Numbers m such that 11·m² - 7 is a square. A221763

The non-common part of the smaller number of an amicable pair. A180326

Expansion of g.f. x*(1 +4·x +4·x² +18·x³ +7·x⁴ +7·x⁵ -2·x⁶ -x⁷ -x⁸ -x⁹) / (1-20·x⁶+x¹²). A116561

Sum of the squares of the first n nonsquarefree numbers (A013929). A111732

Decimal expansion of the Pythagorean comma. A221363

a(0) = 3; for n > 0, a(n) is the greatest prime factor of PreviousPrime(a(n-1))*a(n-1)-1 where PreviousPrime(prime(k))=prime(k-1). A31441

Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 4 6 or 7. A252136

Number of (n+2)X(5+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 or 4. A252072