311302320313 has 2 divisors, whose sum is σ = 311302320314. Its totient is φ = 311302320312.

The previous prime is 311302320271. The next prime is 311302320337. The reversal of 311302320313 is 313023203113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238570702969 + 72731617344 = 488437^2 + 269688^2 .

It is a cyclic number.

It is not a de Polignac number, because 311302320313 - 2³³ = 302712385721 is a prime.

It is not a weakly prime, because it can be changed into another prime (311302620313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155651160156 + 155651160157.

It is an arithmetic number, because the mean of its divisors is an integer number (155651160157).

Almost surely, 2^311302320313 is an apocalyptic number.

It is an amenable number.

311302320313 is a deficient number, since it is larger than the sum of its proper divisors (1).

311302320313 is an equidigital number, since it uses as much as digits as its factorization.

311302320313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 311302320313 its reverse (313023203113), we get a palindrome (624325523426).

The spelling of 311302320313 in words is "three hundred eleven billion, three hundred two million, three hundred twenty thousand, three hundred thirteen".