Properties of the Number 20311

Twenty Thousand Three Hundred Eleven

Basics

Value: 20310 → 20311 → 20312

Parity: odd

Prime: No

Previous Prime: 20297

Next Prime: 20323

Digit Sum: 7

Digital Root: 7

Palindrome: No

Factorization: 19 × 1069

Divisors: 1, 19, 1069, 20311

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100111101010111

Octal: 47527

Duodecimal: B907

Hexadecimal: 4f57

Square: 412536721

Square Root: 142.51666569212176

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

Prime time numbers on 6-digit clocks: numbers of the form HMMSS where H, MM, SS are primes, H < 24, MM and SS < 60. A295014

Triangle of coefficients of polynomials v(n,x) jointly generated with A210743; see the Formula section. A210744

Number of nX4 0..1 arrays with every element equal to 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero. A298142

Cubes written in base 5. A4635

Volume of torus (rounded down) with major radius = n and minor radius = n/3. A228641

Number of (n+2) X (2+2) 0..1 arrays with no 3 X 3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 0 or 3 and no column sum 0 or 3. A258960

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 201", based on the 5-celled von Neumann neighborhood. A270722

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 0 or 3 and no column sum 0 or 3. A258966

T(n,k)=Number of nXk 0..1 arrays with every element equal to 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero. A298146

T(n,k)=Number of nXk 0..1 arrays with every element equal to 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero. A298177