311121311994 has 24 divisors (see below), whose sum is σ = 674239692672. Its totient is φ = 103685024520.

The previous prime is 311121311989. The next prime is 311121312083. The reversal of 311121311994 is 499113121113.

311121311994 is a `hidden beast` number, since 311 + 1 + 21 + 311 + 9 + 9 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1752952 + ... + 1922259.

It is an arithmetic number, because the mean of its divisors is an integer number (28093320528).

Almost surely, 2^311121311994 is an apocalyptic number.

311121311994 is an abundant number, since it is smaller than the sum of its proper divisors (363118380678).

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

311121311994 is a wasteful number, since it uses less digits than its factorization.

311121311994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679922 (or 3679919 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The spelling of 311121311994 in words is "three hundred eleven billion, one hundred twenty-one million, three hundred eleven thousand, nine hundred ninety-four".