311440102402321 has 2 divisors, whose sum is σ = 311440102402322. Its totient is φ = 311440102402320.

The previous prime is 311440102402309. The next prime is 311440102402333. The reversal of 311440102402321 is 123204201044113.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (311440102402309) and next prime (311440102402333).

It can be written as a sum of positive squares in only one way, i.e., 308340956929600 + 3099145472721 = 17559640^2 + 1760439^2 .

It is a cyclic number.

It is not a de Polignac number, because 311440102402321 - 2⁹ = 311440102401809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311440102402321.

It is not a weakly prime, because it can be changed into another prime (311440102402361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155720051201160 + 155720051201161.

It is an arithmetic number, because the mean of its divisors is an integer number (155720051201161).

Almost surely, 2^{311440102402321} is an apocalyptic number.

It is an amenable number.

311440102402321 is a deficient number, since it is larger than the sum of its proper divisors (1).

311440102402321 is an equidigital number, since it uses as much as digits as its factorization.

311440102402321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 311440102402321 its reverse (123204201044113), we get a palindrome (434644303446434).

The spelling of 311440102402321 in words is "three hundred eleven trillion, four hundred forty billion, one hundred two million, four hundred two thousand, three hundred twenty-one".