Properties of the Number 8131

Eight Thousand One Hundred Thirty-One

Basics

Value: 8130 → 8131 → 8132

Parity: odd

Prime: No

Previous Prime: 8123

Next Prime: 8147

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 47 × 173

Divisors: 1, 47, 173, 8131

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111111000011

Octal: 17703

Duodecimal: 4857

Hexadecimal: 1fc3

Square: 66113161

Square Root: 90.17205775626948

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) = 1·2 + 3·4 + 5·6 + 7·8 + 9·10 + 11·12 + 13·14 + ... + (up to n). A228958

Sorted positions of first appearances in A057820, the sequence of first differences of prime-powers. A376340

a(1) = 6; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime. A46256

Numbers k such that k, k+2, k+4, k+6, k+8, k+10, k+12 are semiprimes. A92129

Number of partitions of n with more odd parts than even parts. A108950

Number of subsets of {1..n} that cannot be linearly combined using positive coefficients to obtain n. A365322

Numbers k such that k, k+2, k+4, k+6, k+8, k+10 are semiprimes. A92128

Numbers k such that k, k+2, k+4, k+6, k+8 are semiprimes. A92127

Sum of the largest parts of the partitions of n into 9 squarefree parts. A326532

Number of multiset partitions of uniform integer partitions of n in which all parts have the same length. A320451