311303121011 has 2 divisors, whose sum is σ = 311303121012. Its totient is φ = 311303121010.

The previous prime is 311303121007. The next prime is 311303121089. The reversal of 311303121011 is 110121303113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311303121011 - 2² = 311303121007 is a prime.

It is not a weakly prime, because it can be changed into another prime (311303621011) 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, 155651560505 + 155651560506.

It is an arithmetic number, because the mean of its divisors is an integer number (155651560506).

Almost surely, 2^311303121011 is an apocalyptic number.

311303121011 is a deficient number, since it is larger than the sum of its proper divisors (1).

311303121011 is an equidigital number, since it uses as much as digits as its factorization.

311303121011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 311303121011 its reverse (110121303113), we get a palindrome (421424424124).

The spelling of 311303121011 in words is "three hundred eleven billion, three hundred three million, one hundred twenty-one thousand, eleven".