311202020313 has 12 divisors (see below), whose sum is σ = 450959416128. Its totient is φ = 206800911960.

The previous prime is 311202020279. The next prime is 311202020323. The reversal of 311202020313 is 313020202113.

311202020313 is a `hidden beast` number, since 31 + 120 + 202 + 0 + 313 = 666.

It is not a de Polignac number, because 311202020313 - 2¹⁸ = 311201758169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (311202020323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55588845 + ... + 55594442.

It is an arithmetic number, because the mean of its divisors is an integer number (37579951344).

Almost surely, 2^311202020313 is an apocalyptic number.

It is an amenable number.

311202020313 is a deficient number, since it is larger than the sum of its proper divisors (139757395815).

311202020313 is a wasteful number, since it uses less digits than its factorization.

311202020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111183604 (or 111183601 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 311202020313 its reverse (313020202113), we get a palindrome (624222222426).

The spelling of 311202020313 in words is "three hundred eleven billion, two hundred two million, twenty thousand, three hundred thirteen".