311033013010121 has 2 divisors, whose sum is σ = 311033013010122. Its totient is φ = 311033013010120.

The previous prime is 311033013010043. The next prime is 311033013010133. The reversal of 311033013010121 is 121010310330113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278870628336400 + 32162384673721 = 16699420^2 + 5671189^2 .

It is a cyclic number.

It is not a de Polignac number, because 311033013010121 - 2²² = 311033008815817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311033013010093 and 311033013010102.

It is not a weakly prime, because it can be changed into another prime (311033013010141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155516506505060 + 155516506505061.

It is an arithmetic number, because the mean of its divisors is an integer number (155516506505061).

Almost surely, 2^{311033013010121} is an apocalyptic number.

It is an amenable number.

311033013010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

311033013010121 is an equidigital number, since it uses as much as digits as its factorization.

311033013010121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 311033013010121 its reverse (121010310330113), we get a palindrome (432043323340234).

The spelling of 311033013010121 in words is "three hundred eleven trillion, thirty-three billion, thirteen million, ten thousand, one hundred twenty-one".