311321313229 has 2 divisors, whose sum is σ = 311321313230. Its totient is φ = 311321313228.

The previous prime is 311321313211. The next prime is 311321313337. The reversal of 311321313229 is 922313123113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242728655625 + 68592657604 = 492675^2 + 261902^2 .

It is a cyclic number.

It is not a de Polignac number, because 311321313229 - 2¹¹ = 311321311181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311321313229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311321313629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155660656614 + 155660656615.

It is an arithmetic number, because the mean of its divisors is an integer number (155660656615).

Almost surely, 2^311321313229 is an apocalyptic number.

It is an amenable number.

311321313229 is a deficient number, since it is larger than the sum of its proper divisors (1).

311321313229 is an equidigital number, since it uses as much as digits as its factorization.

311321313229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 31.

The spelling of 311321313229 in words is "three hundred eleven billion, three hundred twenty-one million, three hundred thirteen thousand, two hundred twenty-nine".