Properties of the Number 12312

Twelve Thousand Three Hundred Twelve

Basics

Value: 12311 → 12312 → 12313

Parity: even

Prime: No

Previous Prime: 12301

Next Prime: 12323

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ⁴ × 19

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 18, 19

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11000000011000

Octal: 30030

Duodecimal: 7160

Hexadecimal: 3018

Square: 151585344

Square Root: 110.95945205344158

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

Numbers k such that 2·3^k - 1 is prime. A3307

Image of 1 under repeated application of the morphism 1 -> 12312, 2 -> 341, 3 -> 34134, 4 -> 123. A316340

a(n) = (2·n-1)*(5·n²-5·n+2)/2. A63495

Coefficients of the '6th-order' mock θ function ρ(q). A53270

Number of integer partitions of n such that the dual of the multiset partition obtained by factoring each part into prime numbers is a weak antichain. A326978

Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,2,3. A37610

Positive numbers n such that n is a multiple of (product of digits of n) * (sum of digits of n). A49102

Coefficients of the '6th-order' mock θ function λ(q). A53272

Numbers k such that 13·k = A048720(29,k), where A048720 is carryless base-2 multiplication. A115805

Row sums of A128623. A128624