Properties of the Number 3811

Three Thousand Eight Hundred Eleven

Basics

Value: 3810 → 3811 → 3812

Parity: odd

Prime: No

Previous Prime: 3803

Next Prime: 3821

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 37 × 103

Divisors: 1, 37, 103, 3811

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011100011

Octal: 7343

Duodecimal: 2257

Hexadecimal: ee3

Square: 14523721

Square Root: 61.73329733620261

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

Number of flat partitions of n: partitions {a_i} with each |a_i - a_i-1| <= 1. A34296

Number of n-celled solid polyominoes (or free polycubes, allowing mirror-image identification). A38119

Numbers n such that p(7n) is prime, where p(n) is the number of partitions of n. A114167

Poincaré series for invariant polynomial functions on the space of binary forms of degree 9. A293934

Irregular array read by rows in which row floor(k/3)+1, where gcd(k,6)=1, lists the smallest elements, in ascending order, of conjecturally all primitive cycles of positive integers under iteration by the 3x+k function. A226607

Number of integer partitions of n containing all divisors of all parts. A371178

Shifts left when inverse Moebius transform applied twice. A7557

Expansion of ψ(x²) / f(-x) in powers of·where ψ(), f() are Ramanujan θ functions. A98613

Least positive number k such that 2^k mod k = 2n+1, or 0 if no such k exists. A124977

T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than one of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly two elements. A282969