311220344 has 16 divisors (see below), whose sum is σ = 603660600. Its totient is φ = 150244192.

The previous prime is 311220341. The next prime is 311220391. The reversal of 311220344 is 443022113.

311220344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311220341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670502 + ... + 670965.

Almost surely, 2^311220344 is an apocalyptic number.

It is an amenable number.

311220344 is a deficient number, since it is larger than the sum of its proper divisors (292440256).

311220344 is a wasteful number, since it uses less digits than its factorization.

311220344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341502 (or 1341498 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 311220344 is about 17641.4382633616. The cubic root of 311220344 is about 677.6768647236.

Adding to 311220344 its reverse (443022113), we get a palindrome (754242457).

The spelling of 311220344 in words is "three hundred eleven million, two hundred twenty thousand, three hundred forty-four".