311320302313 has 2 divisors, whose sum is σ = 311320302314. Its totient is φ = 311320302312.

The previous prime is 311320302289. The next prime is 311320302343. The reversal of 311320302313 is 313203023113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 236242658304 + 75077644009 = 486048^2 + 274003^2 .

It is a cyclic number.

It is not a de Polignac number, because 311320302313 - 2⁵ = 311320302281 is a prime.

It is not a weakly prime, because it can be changed into another prime (311320302343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155660151156 + 155660151157.

It is an arithmetic number, because the mean of its divisors is an integer number (155660151157).

Almost surely, 2^311320302313 is an apocalyptic number.

It is an amenable number.

311320302313 is a deficient number, since it is larger than the sum of its proper divisors (1).

311320302313 is an equidigital number, since it uses as much as digits as its factorization.

311320302313 is an evil number, because the sum of its binary digits is even.

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

Adding to 311320302313 its reverse (313203023113), we get a palindrome (624523325426).

The spelling of 311320302313 in words is "three hundred eleven billion, three hundred twenty million, three hundred two thousand, three hundred thirteen".