311312304 has 60 divisors (see below), whose sum is σ = 874152136. Its totient is φ = 103424256.

The previous prime is 311312297. The next prime is 311312329. The reversal of 311312304 is 403213113.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 41619 + ... + 48525.

Almost surely, 2^311312304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 311312304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437076068).

311312304 is an abundant number, since it is smaller than the sum of its proper divisors (562839832).

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

311312304 is a wasteful number, since it uses less digits than its factorization.

311312304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7234 (or 7225 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 311312304 is about 17644.0444343127. The cubic root of 311312304 is about 677.7436052485.

Adding to 311312304 its reverse (403213113), we get a palindrome (714525417).

The spelling of 311312304 in words is "three hundred eleven million, three hundred twelve thousand, three hundred four".