31311303030013 has 2 divisors, whose sum is σ = 31311303030014. Its totient is φ = 31311303030012.

The previous prime is 31311303029957. The next prime is 31311303030097. The reversal of 31311303030013 is 31003030311313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31270710048484 + 40592981529 = 5592022^2 + 201477^2 .

It is a cyclic number.

It is not a de Polignac number, because 31311303030013 - 2¹³ = 31311303021821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31311303037013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655651515006 + 15655651515007.

It is an arithmetic number, because the mean of its divisors is an integer number (15655651515007).

Almost surely, 2^{31311303030013} is an apocalyptic number.

It is an amenable number.

31311303030013 is a deficient number, since it is larger than the sum of its proper divisors (1).

31311303030013 is an equidigital number, since it uses as much as digits as its factorization.

31311303030013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 729, while the sum is 22.

Adding to 31311303030013 its reverse (31003030311313), we get a palindrome (62314333341326).

The spelling of 31311303030013 in words is "thirty-one trillion, three hundred eleven billion, three hundred three million, thirty thousand, thirteen".