Properties of the Number 30811

Thirty Thousand Eight Hundred Eleven

Basics

Value: 30810 → 30811 → 30812

Parity: odd

Prime: No

Previous Prime: 30809

Next Prime: 30817

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 11 × 2801

Divisors: 1, 11, 2801, 30811

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100001011011

Octal: 74133

Duodecimal: 159B7

Hexadecimal: 785b

Square: 949317721

Square Root: 175.53062410872926

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

Pseudoprimes to base 7. A5938

E.g.f. satisfies A(x) = exp(x + x²*A(x)²). A143768

Partial sums of A008531, or crystal ball sequence for {A₄}* lattice. A222408

a(n) is the smallest integer k such that log(1/log((1+k)^1/k)) > n. A145914

The number of distinct (up to unitary similarity) *-subalgebras of the n X n complex matrices. A215925

Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = n! * ∑_{j=0..floor(n/2)} (k/2)^j * (2·j+1)^n-j-1 / (j! * (n-2·j)!). A362483

Strong pseudoprimes to base 49. A20275

Expansion of Molien series for the ring of genus 5 code polynomials for Type II codes. A144060

a(n) = floor(5·prime(n)² / 4). A246010

Centered 10-gonal numbers which are products of two primes. A367792