311333023113121 has 4 divisors (see below), whose sum is σ = 311448803340100. Its totient is φ = 311217242886144.

The previous prime is 311333023113113. The next prime is 311333023113163. The reversal of 311333023113121 is 121311320333113.

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 15716752798096 + 295616270315025 = 3964436^2 + 17193495^2 .

It is a cyclic number.

It is not a de Polignac number, because 311333023113121 - 2³ = 311333023113113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311333023113121.

It is not an unprimeable number, because it can be changed into a prime (311333023113421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57890109456 + ... + 57890114833.

It is an arithmetic number, because the mean of its divisors is an integer number (77862200835025).

Almost surely, 2^{311333023113121} is an apocalyptic number.

It is an amenable number.

311333023113121 is a deficient number, since it is larger than the sum of its proper divisors (115780226979).

311333023113121 is a wasteful number, since it uses less digits than its factorization.

311333023113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115780226978.

The product of its (nonzero) digits is 2916, while the sum is 28.

Adding to 311333023113121 its reverse (121311320333113), we get a palindrome (432644343446234).

The spelling of 311333023113121 in words is "three hundred eleven trillion, three hundred thirty-three billion, twenty-three million, one hundred thirteen thousand, one hundred twenty-one".