311672868 has 24 divisors (see below), whose sum is σ = 783178368. Its totient is φ = 95899296.

The previous prime is 311672861. The next prime is 311672873. The reversal of 311672868 is 868276113.

It is not an unprimeable number, because it can be changed into a prime (311672861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 998796 + ... + 999107.

It is an arithmetic number, because the mean of its divisors is an integer number (32632432).

Almost surely, 2^311672868 is an apocalyptic number.

It is an amenable number.

311672868 is an abundant number, since it is smaller than the sum of its proper divisors (471505500).

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

311672868 is a wasteful number, since it uses less digits than its factorization.

311672868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997923 (or 1997921 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 311672868 is about 17654.2592028100. The cubic root of 311672868 is about 678.0051600272.

The spelling of 311672868 in words is "three hundred eleven million, six hundred seventy-two thousand, eight hundred sixty-eight".