Properties of the Number 83811

Eighty-Three Thousand Eight Hundred Eleven

Basics

Value: 83810 → 83811 → 83812

Parity: odd

Prime: No

Previous Prime: 83791

Next Prime: 83813

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 13 × 307

Divisors: 1, 3, 7, 13, 21, 39, 91, 273, 307, 921

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10100011101100011

Octal: 243543

Duodecimal: 40603

Hexadecimal: 14763

Square: 7024283721

Square Root: 289.50129533388963

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) = (n² - n + 1)*(n² + n + 1). A59826

Sum of squares of divisors of square numbers. A65827

Jordan function ratio J₆(n)/J₂(n). A194532

a(0)=0, a(1)=1, a(2n)=17·a(n), a(2n+1)=a(2n)+1. A197351

Number of n X 2 arrays of the minimum value of corresponding elements and their horizontal, vertical, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..2 n X 2 array. A219211

Expansion of 1/((1-4x)(1-5x)(1-8x)(1-10x)). A28121

Composite numbers of the form k²+k+1 all of whose prime factors are of that same form. A353056

Central polygonal numbers that are nontrivially the product of two central polygonal numbers. A203173

Array t(n,k) of sum of successive even powers of primes, where t(n,k) = sum_j=0..k-1 prime(n)^2j, with n>=1 and k>=0, read by ascending antidiagonals. A241855

Numbers k such that (8·10^k - 101)/3 is prime. A294121