Properties of the Number 31804

Thirty-One Thousand Eight Hundred Four

Basics

Value: 31803 → 31804 → 31805

Parity: even

Prime: No

Previous Prime: 31799

Next Prime: 31817

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 ² × 7951

Divisors: 1, 2, 4, 7951, 15902, 31804

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111110000111100

Octal: 76074

Duodecimal: 164A4

Hexadecimal: 7c3c

Square: 1011494416

Square Root: 178.3367600916872

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

G.f. satisfies: A(x) = 1 + ∑_n>=1 xⁿ*A(x)ⁿ/(1 - xⁿ*A(x)ⁿ). A192206

Rising diagonal sums of triangle of Fibonacci polynomials (rows displayed as centered text). A227300

Intersection of A361073 and 2·A361611. A361215

Third differences of A001521. A241576

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 801", based on the 5-celled von Neumann neighborhood. A273575

Number of nX4 0..2 arrays with no element equal to more than one of its king-move neighbors and with new values introduced in order 0 sequentially upwards. A280855

T(n,k)=Number of nXk 0..2 arrays with no element equal to more than one of its king-move neighbors and with new values introduced in order 0 sequentially upwards. A280859

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 36 ones. A31804