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Properties of the Number 11811

Eleven Thousand Eight Hundred Eleven

Basics

Value: 11810 → 11811 → 11812

Parity: odd

Prime: No

Previous Prime: 11807

Next Prime: 11813

Digit Sum: 12

Digital Root: 3

Palindrome: Yes

Factorization: 3 × 31 × 127

Divisors: 1, 3, 31, 93, 127, 381, 3937, 11811

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10111000100011

Octal: 27043

Duodecimal: 6A03

Hexadecimal: 2e23

Square: 139499721

Square Root: 108.67842472174502

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

Triangle of Gaussian binomial coefficients (or q-binomial coefficients) [n,k] for q = 2. A22166
Numbers that are a product of distinct Mersenne primes (elements of A000668). A46528
Strobogrammatic numbers: the same upside down. A787
Gaussian binomial coefficient [n, 3] for q = 2. A6096
Gaussian binomial coefficient [n, 4] for q = 2. A6097
Number of sublattices of index n in generic 4-dimensional lattice. A38991
Number of sublattices of index n in generic 5-dimensional lattice. A38992
Vertically symmetric numbers. A53701
Numbers with mirror symmetry about middle. A6072
a(n) = Z(Sm; σ[1](n), σ[2](n),..., σ[m](n)) where Z(Sm; x1,x2,...,xm) is the cycle index of the symmetric group Sm and σ[k](n) is the sum of k-th powers of divisors of n; m=3. A68020