Properties of the Number 13112

Thirteen Thousand One Hundred Twelve

Basics

Value: 13111 → 13112 → 13113

Parity: even

Prime: No

Previous Prime: 13109

Next Prime: 13121

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 11 × 149

Divisors: 1, 2, 4, 8, 11, 22, 44, 88, 149, 298

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11001100111000

Octal: 31470

Duodecimal: 7708

Hexadecimal: 3338

Square: 171924544

Square Root: 114.50764166639709

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

Multiples of 8 with digit sum 8. A69543

Sum of the denominators of the Farey series of order n (A006843). A240877

Number of n X 1 0..1 arrays with the number of 1's king-move adjacent to some 0 two less than the number of 0's adjacent to some 1. A286209

Numbers whose product of digits is 6. A199988

Numbers k such that 27·k+1 is a square. A219258

a(n) = ∑_{-n<i<n, -n<j<n, gcd{i,j}=2} (n-|i|)*(n-|j|). A331772

Triangle read by rows: T(n,m) (n >= m >= 1) = number of edges in the graph formed by drawing the line segments connecting any two of the (n+1) X (m+1) lattice points in an n X m grid of squares. A333278

E.g.f. exp(x)*BesselI(1,2·sqrt(3)*x)/sqrt(3). A98519

Numbers that eventually reach 1 under "x -> sum of 4th power of digits of x". A219111

The binomial sum a(n) = ∑_k=0..n(binomial(n,k)*binomial(n+1,k+1)*binomial(n+2,k+2)). A277188