12456131 has 2 divisors, whose sum is σ = 12456132. Its totient is φ = 12456130.

The previous prime is 12456107. The next prime is 12456151. The reversal of 12456131 is 13165421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12456131 is a prime.

It is a super-2 number, since 2×12456131² = 310310398978322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12456097 and 12456106.

It is not a weakly prime, because it can be changed into another prime (12456151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6228065 + 6228066.

It is an arithmetic number, because the mean of its divisors is an integer number (6228066).

Almost surely, 2^12456131 is an apocalyptic number.

12456131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12456131 is an equidigital number, since it uses as much as digits as its factorization.

12456131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 23.

The square root of 12456131 is about 3529.3244396060. The cubic root of 12456131 is about 231.8076276392.

The spelling of 12456131 in words is "twelve million, four hundred fifty-six thousand, one hundred thirty-one".