Properties of the Number -31888

Thirty-One Thousand Eight Hundred Eighty-Eight

Basics

Value: -31889 → -31888 → -31887

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ⁴ × 1993

Divisors: 1, 2, 4, 8, 16, 1993, 3986, 7972, 15944, 31888

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111110010010000

Octal: -76220

Duodecimal: -16554

Hexadecimal: -7c90

Square: 1016844544

Square Root: 178.5721142843977

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,m) = number of 0..m-1 integer arrays v[1..n] of length n with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1. A171307

T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, vertical and antidiagonal neighbors in a random 0..1 nXk array. A220461

T(n,k)=Number of n-turn queen's tours on a kXk board summed over all starting positions. A186965

Number of 0..n-1 integer arrays v[1..6] of length 6 with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..5. A171357

Number of 0..5 integer arrays v[1..n] of length n with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1. A171311

Equals one maps: number of nX2 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, vertical and antidiagonal neighbors in a random 0..1 nX2 array. A220456

Number of 3-turn queen's tours on an n X n board summed over all starting positions. A186966

Number of 2-face-free maps on n edges. A220899