311351488013 has 2 divisors, whose sum is σ = 311351488014. Its totient is φ = 311351488012.

The previous prime is 311351488009. The next prime is 311351488079. The reversal of 311351488013 is 310884153113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229405555369 + 81945932644 = 478963^2 + 286262^2 .

It is a cyclic number.

It is not a de Polignac number, because 311351488013 - 2² = 311351488009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311356488013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155675744006 + 155675744007.

It is an arithmetic number, because the mean of its divisors is an integer number (155675744007).

Almost surely, 2^311351488013 is an apocalyptic number.

It is an amenable number.

311351488013 is a deficient number, since it is larger than the sum of its proper divisors (1).

311351488013 is an equidigital number, since it uses as much as digits as its factorization.

311351488013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 311351488013 in words is "three hundred eleven billion, three hundred fifty-one million, four hundred eighty-eight thousand, thirteen".