12304431013 has 12 divisors (see below), whose sum is σ = 14349394092. Its totient is φ = 10520072640.

The previous prime is 12304430981. The next prime is 12304431019. The reversal of 12304431013 is 31013440321.

It can be written as a sum of positive squares in 2 ways, for example, as 10147943169 + 2156487844 = 100737^2 + 46438^2 .

It is not a de Polignac number, because 12304431013 - 2⁵ = 12304430981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12304431019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296808 + ... + 335713.

It is an arithmetic number, because the mean of its divisors is an integer number (1195782841).

Almost surely, 2^12304431013 is an apocalyptic number.

It is an amenable number.

12304431013 is a deficient number, since it is larger than the sum of its proper divisors (2044963079).

12304431013 is an equidigital number, since it uses as much as digits as its factorization.

12304431013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632932 (or 632925 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12304431013 its reverse (31013440321), we get a palindrome (43317871334).

The spelling of 12304431013 in words is "twelve billion, three hundred four million, four hundred thirty-one thousand, thirteen".