311493936 has 40 divisors (see below), whose sum is σ = 866593840. Its totient is φ = 95844096.

The previous prime is 311493913. The next prime is 311493947. The reversal of 311493936 is 639394113.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 311493894 and 311493903.

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, 248971 + ... + 250218.

It is an arithmetic number, because the mean of its divisors is an integer number (21664846).

Almost surely, 2^311493936 is an apocalyptic number.

It is an amenable number.

311493936 is an abundant number, since it is smaller than the sum of its proper divisors (555099904).

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

311493936 is a wasteful number, since it uses less digits than its factorization.

311493936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499213 (or 499207 counting only the distinct ones).

The product of its digits is 52488, while the sum is 39.

The square root of 311493936 is about 17649.1908029802. The cubic root of 311493936 is about 677.8753871625.

The spelling of 311493936 in words is "three hundred eleven million, four hundred ninety-three thousand, nine hundred thirty-six".