Properties of the Number -131971

One Hundred Thirty-One Thousand Nine Hundred Seventy-One

Basics

Value: -131972 → -131971 → -131970

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 × 17 × 1109

Divisors: 1, 7, 17, 119, 1109, 7763, 18853, 131971

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100000001110000011

Octal: -401603

Duodecimal: -64457

Hexadecimal: -20383

Square: 17416344841

Square Root: 363.2781303629493

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

2·Sum(floor(C(n,w)/w),w=1..n/2-1)+floor(C(n,n/2)/(n/2)) if n is even, otherwise 2·Sum(floor(C(n,w)/w),w=1..(n-1)/2). A85573

Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 1000-1100-0111 pattern in any orientation. A146393