311493868 has 24 divisors (see below), whose sum is σ = 625008384. Its totient is φ = 133064400.

The previous prime is 311493821. The next prime is 311493881. The reversal of 311493868 is 868394113.

311493868 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9178 + ... + 26593.

It is an arithmetic number, because the mean of its divisors is an integer number (26042016).

Almost surely, 2^311493868 is an apocalyptic number.

It is an amenable number.

311493868 is an abundant number, since it is smaller than the sum of its proper divisors (313514516).

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

311493868 is a wasteful number, since it uses less digits than its factorization.

311493868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36093 (or 36091 counting only the distinct ones).

The product of its digits is 124416, while the sum is 43.

The square root of 311493868 is about 17649.1888765461. The cubic root of 311493868 is about 677.8753378352.

The spelling of 311493868 in words is "three hundred eleven million, four hundred ninety-three thousand, eight hundred sixty-eight".