Properties of the Number 31917

Thirty-One Thousand Nine Hundred Seventeen

Basics

Value: 31916 → 31917 → 31918

Parity: odd

Prime: No

Previous Prime: 31907

Next Prime: 31957

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 10639

Divisors: 1, 3, 10639, 31917

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111110010101101

Octal: 76255

Duodecimal: 16579

Hexadecimal: 7cad

Square: 1018694889

Square Root: 178.65329551956214

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,k)=Majority value maps: number of nXk binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and vertical neighbors in a random 0..2 nXk array. A220259

Monotonic ordering of set S generated by these rules: if·and y are in S then 2xy-x-y is in S, and 3 is in S. A192525

n/3 analog of Keith numbers. A282767

Majority value maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and vertical neighbors in a random 0..2 nX4 array. A220257

Let b(1) = 2 and let b(n+1) be the least prime expressible as k*(b(n)-1)*b(n)+1; this sequence gives the values of k in order. A339174

a(n) = prime(10·n-7). A31917