12312331013 has 2 divisors, whose sum is σ = 12312331014. Its totient is φ = 12312331012.

The previous prime is 12312331007. The next prime is 12312331021. The reversal of 12312331013 is 31013321321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9634992964 + 2677338049 = 98158^2 + 51743^2 .

It is a cyclic number.

It is not a de Polignac number, because 12312331013 - 2⁶ = 12312330949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12312331063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156165506 + 6156165507.

It is an arithmetic number, because the mean of its divisors is an integer number (6156165507).

Almost surely, 2^12312331013 is an apocalyptic number.

It is an amenable number.

12312331013 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312331013 is an equidigital number, since it uses as much as digits as its factorization.

12312331013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12312331013 its reverse (31013321321), we get a palindrome (43325652334).

The spelling of 12312331013 in words is "twelve billion, three hundred twelve million, three hundred thirty-one thousand, thirteen".