12310431313 has 2 divisors, whose sum is σ = 12310431314. Its totient is φ = 12310431312.

The previous prime is 12310431269. The next prime is 12310431383. The reversal of 12310431313 is 31313401321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12155503504 + 154927809 = 110252^2 + 12447^2 .

It is an emirp because it is prime and its reverse (31313401321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12310431313 is a prime.

It is a super-2 number, since 2×12310431313² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12310431383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155215656 + 6155215657.

It is an arithmetic number, because the mean of its divisors is an integer number (6155215657).

Almost surely, 2^12310431313 is an apocalyptic number.

It is an amenable number.

12310431313 is a deficient number, since it is larger than the sum of its proper divisors (1).

12310431313 is an equidigital number, since it uses as much as digits as its factorization.

12310431313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 12310431313 its reverse (31313401321), we get a palindrome (43623832634).

The spelling of 12310431313 in words is "twelve billion, three hundred ten million, four hundred thirty-one thousand, three hundred thirteen".