Properties of the Number -31386

Thirty-One Thousand Three Hundred Eighty-Six

Basics

Value: -31387 → -31386 → -31385

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5231

Divisors: 1, 2, 3, 6, 5231, 10462, 15693, 31386

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111101010011010

Octal: -75232

Duodecimal: -161B6

Hexadecimal: -7a9a

Square: 985080996

Square Root: 177.16094377712037

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

Numbers k such that k![7]-1 is prime (where k![7] = A114799(k) = septuple factorial). A156167

T(n,k) = Number of n X k 0..4 arrays with each element·equal to the number of its horizontal and vertical neighbors equal to 3,2,1,0,4 for x=0,1,2,3,4. A196982

Coefficients in the expansion of 1/([r] + [2r]x + [3r]x² + ...); [ ] = floor, r = 5/4. A279677

Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,27. A64250

Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,31. A64252

Number of nX3 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 3,2,1,0,4 for x=0,1,2,3,4. A196977

Number of nX7 0..4 arrays with each element·equal to the number its horizontal and vertical neighbors equal to 3,2,1,0,4 for x=0,1,2,3,4. A196981

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 0), (1, -1, 1), (1, 0, 1), (1, 1, 0)}. A150501