311312344 has 32 divisors (see below), whose sum is σ = 683373600. Its totient is φ = 130164480.

The previous prime is 311312329. The next prime is 311312363. The reversal of 311312344 is 443213113.

It is a congruent number.

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, 65499 + ... + 70090.

It is an arithmetic number, because the mean of its divisors is an integer number (21355425).

Almost surely, 2^311312344 is an apocalyptic number.

It is an amenable number.

311312344 is an abundant number, since it is smaller than the sum of its proper divisors (372061256).

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

311312344 is a wasteful number, since it uses less digits than its factorization.

311312344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135643 (or 135639 counting only the distinct ones).

The product of its digits is 864, while the sum is 22.

The square root of 311312344 is about 17644.0455678396. The cubic root of 311312344 is about 677.7436342759.

Adding to 311312344 its reverse (443213113), we get a palindrome (754525457).

The spelling of 311312344 in words is "three hundred eleven million, three hundred twelve thousand, three hundred forty-four".