311021443011113 has 4 divisors (see below), whose sum is σ = 315282010723668. Its totient is φ = 306760875298560.

The previous prime is 311021443011053. The next prime is 311021443011127. The reversal of 311021443011113 is 311110344120113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 174404431575529 + 136617011435584 = 13206227^2 + 11688328^2 .

It is a cyclic number.

It is not a de Polignac number, because 311021443011113 - 2¹² = 311021443007017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311021443031113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2130283856168 + ... + 2130283856313.

It is an arithmetic number, because the mean of its divisors is an integer number (78820502680917).

Almost surely, 2^{311021443011113} is an apocalyptic number.

It is an amenable number.

311021443011113 is a deficient number, since it is larger than the sum of its proper divisors (4260567712555).

311021443011113 is an equidigital number, since it uses as much as digits as its factorization.

311021443011113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260567712554.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 311021443011113 its reverse (311110344120113), we get a palindrome (622131787131226).

The spelling of 311021443011113 in words is "three hundred eleven trillion, twenty-one billion, four hundred forty-three million, eleven thousand, one hundred thirteen".