12312304013 has 2 divisors, whose sum is σ = 12312304014. Its totient is φ = 12312304012.

The previous prime is 12312303979. The next prime is 12312304031. The reversal of 12312304013 is 31040321321.

Together with next prime (12312304031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12222850249 + 89453764 = 110557^2 + 9458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12312304013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12312304033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156152006 + 6156152007.

It is an arithmetic number, because the mean of its divisors is an integer number (6156152007).

Almost surely, 2^12312304013 is an apocalyptic number.

It is an amenable number.

12312304013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312304013 is an equidigital number, since it uses as much as digits as its factorization.

12312304013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 12312304013 its reverse (31040321321), we get a palindrome (43352625334).

The spelling of 12312304013 in words is "twelve billion, three hundred twelve million, three hundred four thousand, thirteen".