311022117 has 12 divisors (see below), whose sum is σ = 513433440. Its totient is φ = 177726888.

The previous prime is 311022113. The next prime is 311022119. The reversal of 311022117 is 711220113.

It is a happy number.

It is not a de Polignac number, because 311022117 - 2² = 311022113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311022117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311022113) 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, 2468367 + ... + 2468492.

It is an arithmetic number, because the mean of its divisors is an integer number (42786120).

Almost surely, 2^311022117 is an apocalyptic number.

It is an amenable number.

311022117 is a deficient number, since it is larger than the sum of its proper divisors (202411323).

311022117 is a wasteful number, since it uses less digits than its factorization.

311022117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4936872 (or 4936869 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 311022117 is about 17635.8191474057. The cubic root of 311022117 is about 677.5329555553.

The spelling of 311022117 in words is "three hundred eleven million, twenty-two thousand, one hundred seventeen".