Properties of the Number 11391

Eleven Thousand Three Hundred Ninety-One

Basics

Value: 11390 → 11391 → 11392

Parity: odd

Prime: No

Previous Prime: 11383

Next Prime: 11393

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 3797

Divisors: 1, 3, 3797, 11391

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10110001111111

Octal: 26177

Duodecimal: 6713

Hexadecimal: 2c7f

Square: 129754881

Square Root: 106.72862783714592

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) = floor(M(g(n-1)+1, ..., g(n))), where M = harmonic mean and g(n) = n³. A227012

a(n) = ceiling((n + 1/2)³). A34131

Number of partitions of n into parts occurring in '3x+1'-trajectory starting with n. A160000

Partial sums of floor(2ⁿ/23). A178457

Indices of primes in the 10th-order Fibonacci number sequence, A127194. A257073

Numbers missing from A317416. A317418

Numbers n such that 6·10ⁿ + 4·R_n + 5 is prime, where R_n = 11...1 is the repunit (A002275) of length n. A103037

Numbers k such that 2^2·k - (2·k-1) is prime. A119386

Numbers k such that τ(k-1) = (τ(k))² = τ(k+1), where τ(k) = A000005(k) (number of divisors of k). A190266

Number of n-bead necklaces labeled with numbers 1..6 allowing reversal, with no adjacent beads differing by more than 1. A208719