12431513 has 2 divisors, whose sum is σ = 12431514. Its totient is φ = 12431512.

The previous prime is 12431501. The next prime is 12431533. The reversal of 12431513 is 31513421.

It is an a-pointer prime, because the next prime (12431533) can be obtained adding 12431513 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9784384 + 2647129 = 3128^2 + 1627^2 .

It is a cyclic number.

It is not a de Polignac number, because 12431513 - 2¹⁰ = 12430489 is a prime.

It is not a weakly prime, because it can be changed into another prime (12431533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6215756 + 6215757.

It is an arithmetic number, because the mean of its divisors is an integer number (6215757).

Almost surely, 2^12431513 is an apocalyptic number.

It is an amenable number.

12431513 is a deficient number, since it is larger than the sum of its proper divisors (1).

12431513 is an equidigital number, since it uses as much as digits as its factorization.

12431513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 20.

The square root of 12431513 is about 3525.8350783892. The cubic root of 12431513 is about 231.6548139017.

Adding to 12431513 its reverse (31513421), we get a palindrome (43944934).

The spelling of 12431513 in words is "twelve million, four hundred thirty-one thousand, five hundred thirteen".