13315320013 has 2 divisors, whose sum is σ = 13315320014. Its totient is φ = 13315320012.

The previous prime is 13315319999. The next prime is 13315320017. The reversal of 13315320013 is 31002351331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7575439369 + 5739880644 = 87037^2 + 75762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13315320013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13315320017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6657660006 + 6657660007.

It is an arithmetic number, because the mean of its divisors is an integer number (6657660007).

Almost surely, 2^13315320013 is an apocalyptic number.

It is an amenable number.

13315320013 is a deficient number, since it is larger than the sum of its proper divisors (1).

13315320013 is an equidigital number, since it uses as much as digits as its factorization.

13315320013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 22.

Adding to 13315320013 its reverse (31002351331), we get a palindrome (44317671344).

The spelling of 13315320013 in words is "thirteen billion, three hundred fifteen million, three hundred twenty thousand, thirteen".