311320110113 has 2 divisors, whose sum is σ = 311320110114. Its totient is φ = 311320110112.

The previous prime is 311320110083. The next prime is 311320110161. The reversal of 311320110113 is 311011023113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 281062203409 + 30257906704 = 530153^2 + 173948^2 .

It is a cyclic number.

It is not a de Polignac number, because 311320110113 - 2¹² = 311320106017 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 311320110091 and 311320110100.

It is not a weakly prime, because it can be changed into another prime (311320110163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155660055056 + 155660055057.

It is an arithmetic number, because the mean of its divisors is an integer number (155660055057).

Almost surely, 2^311320110113 is an apocalyptic number.

It is an amenable number.

311320110113 is a deficient number, since it is larger than the sum of its proper divisors (1).

311320110113 is an equidigital number, since it uses as much as digits as its factorization.

311320110113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 311320110113 its reverse (311011023113), we get a palindrome (622331133226).

The spelling of 311320110113 in words is "three hundred eleven billion, three hundred twenty million, one hundred ten thousand, one hundred thirteen".