30311031013 has 2 divisors, whose sum is σ = 30311031014. Its totient is φ = 30311031012.

The previous prime is 30311031011. The next prime is 30311031031. The reversal of 30311031013 is 31013011303.

Together with next prime (30311031031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17212915204 + 13098115809 = 131198^2 + 114447^2 .

It is a cyclic number.

It is not a de Polignac number, because 30311031013 - 2¹ = 30311031011 is a prime.

Together with 30311031011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30311031011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15155515506 + 15155515507.

It is an arithmetic number, because the mean of its divisors is an integer number (15155515507).

Almost surely, 2^30311031013 is an apocalyptic number.

It is an amenable number.

30311031013 is a deficient number, since it is larger than the sum of its proper divisors (1).

30311031013 is an equidigital number, since it uses as much as digits as its factorization.

30311031013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 16.

Adding to 30311031013 its reverse (31013011303), we get a palindrome (61324042316).

The spelling of 30311031013 in words is "thirty billion, three hundred eleven million, thirty-one thousand, thirteen".