Properties of the Number 13149

Thirteen Thousand One Hundred Forty-Nine

Basics

Value: 13148 → 13149 → 13150

Parity: odd

Prime: No

Previous Prime: 13147

Next Prime: 13151

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 487

Divisors: 1, 3, 9, 27, 487, 1461, 4383, 13149

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001101011101

Octal: 31535

Duodecimal: 7739

Hexadecimal: 335d

Square: 172896201

Square Root: 114.66908912169835

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 | 5^k + 1. A15951

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction. A250755

Numbers k>1 such that 10^φ(k) == 1 (mod k²), where φ(n)=A000010(n). A241977

Number of days in n years (n=4 is the first leap year). A33171

Numbers n such that φ(φ(n)) + σ(σ(n)) - φ(σ(n)) - σ(φ(n)) = σ(n). A66946

Numbers k which divide the periodic part of the decimal expansion of 1/k. A171928

Number of days in n years (n=3 is the first leap year). A33172

Numbers n which divide the periodic part (with zeros at end) of the decimal expansion of 1/n. A179267

Number of (n+1) X (6+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction. A250753

Number of (4+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction. A250759