311103320102161 has 2 divisors, whose sum is σ = 311103320102162. Its totient is φ = 311103320102160.

The previous prime is 311103320102053. The next prime is 311103320102167. The reversal of 311103320102161 is 161201023301113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214184512881936 + 96918807220225 = 14635044^2 + 9844735^2 .

It is a cyclic number.

It is not a de Polignac number, because 311103320102161 - 2¹⁵ = 311103320069393 is a prime.

It is not a weakly prime, because it can be changed into another prime (311103320102167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155551660051080 + 155551660051081.

It is an arithmetic number, because the mean of its divisors is an integer number (155551660051081).

Almost surely, 2^{311103320102161} is an apocalyptic number.

It is an amenable number.

311103320102161 is a deficient number, since it is larger than the sum of its proper divisors (1).

311103320102161 is an equidigital number, since it uses as much as digits as its factorization.

311103320102161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

Adding to 311103320102161 its reverse (161201023301113), we get a palindrome (472304343403274).

The spelling of 311103320102161 in words is "three hundred eleven trillion, one hundred three billion, three hundred twenty million, one hundred two thousand, one hundred sixty-one".