Properties of the Number 1311

One Thousand Three Hundred Eleven

Basics

Value: 1310 → 1311 → 1312

Parity: odd

Prime: No

Previous Prime: 1307

Next Prime: 1319

Digit Sum: 6

Digital Root: 6

Palindrome: No

Factorization: 3 × 19 × 23

Divisors: 1, 3, 19, 23, 57, 69, 437, 1311

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100011111

Octal: 2437

Duodecimal: 913

Hexadecimal: 51f

Square: 1718721

Square Root: 36.207733980463345

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

Integers written in factorial base. A7623

Number of integer partitions of n with distinct differences between successive parts. A325325

n written in primorial base. A49345

Numbers that are divisible by the product of their digits. A7602

Describe n. Also called the "Say What You See" or "Look and Say" sequence LS(n). A45918

Generalized 9-gonal (or enneagonal) numbers: m*(7·m - 5)/2 with m = 0, 1, -1, 2, -2, 3, -3, ... A118277

a(n) = (n-1)*n*(n+4)/6. A5581

Number of reduced words of length n in the Weyl group D₁₉. A162347

Numbers > 1000 such that all the substrings of length = 3 are primes (substrings with leading '0' are considered to be nonprime). A211684

Numbers that are the sum of 8 positive 5th powers. A3353