311142228078 has 16 divisors (see below), whose sum is σ = 678855770496. Its totient is φ = 94285523640.

The previous prime is 311142228049. The next prime is 311142228083. The reversal of 311142228078 is 870822241113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2357138026 + ... + 2357138157.

It is an arithmetic number, because the mean of its divisors is an integer number (42428485656).

Almost surely, 2^311142228078 is an apocalyptic number.

311142228078 is an abundant number, since it is smaller than the sum of its proper divisors (367713542418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311142228078 is a wasteful number, since it uses less digits than its factorization.

311142228078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714276199.

The product of its (nonzero) digits is 43008, while the sum is 39.

The spelling of 311142228078 in words is "three hundred eleven billion, one hundred forty-two million, two hundred twenty-eight thousand, seventy-eight".