12431317 has 2 divisors, whose sum is σ = 12431318. Its totient is φ = 12431316.

The previous prime is 12431281. The next prime is 12431327. The reversal of 12431317 is 71313421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8994001 + 3437316 = 2999^2 + 1854^2 .

It is a cyclic number.

It is not a de Polignac number, because 12431317 - 2⁷ = 12431189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12431327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215658 + 6215659.

It is an arithmetic number, because the mean of its divisors is an integer number (6215659).

Almost surely, 2^12431317 is an apocalyptic number.

It is an amenable number.

12431317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12431317 is an equidigital number, since it uses as much as digits as its factorization.

12431317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 12431317 is about 3525.8072834459. The cubic root of 12431317 is about 231.6535964424.

Adding to 12431317 its reverse (71313421), we get a palindrome (83744738).

The spelling of 12431317 in words is "twelve million, four hundred thirty-one thousand, three hundred seventeen".