311397344 has 24 divisors (see below), whose sum is σ = 614842200. Its totient is φ = 155246976.

The previous prime is 311397343. The next prime is 311397353. The reversal of 311397344 is 443793113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311397343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2774 + ... + 25109.

It is an arithmetic number, because the mean of its divisors is an integer number (25618425).

Almost surely, 2^311397344 is an apocalyptic number.

It is an amenable number.

311397344 is a deficient number, since it is larger than the sum of its proper divisors (303444856).

311397344 is a wasteful number, since it uses less digits than its factorization.

311397344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28242 (or 28234 counting only the distinct ones).

The product of its digits is 27216, while the sum is 35.

The square root of 311397344 is about 17646.4541480718. The cubic root of 311397344 is about 677.8053118459.

It can be divided in two parts, 31139 and 7344, that added together give a palindrome (38483).

The spelling of 311397344 in words is "three hundred eleven million, three hundred ninety-seven thousand, three hundred forty-four".