311344664 has 32 divisors (see below), whose sum is σ = 620207280. Its totient is φ = 146018304.

The previous prime is 311344651. The next prime is 311344669. The reversal of 311344664 is 466443113.

It is a self number, because there is not a number n which added to its sum of digits gives 311344664.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311344669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38024 + ... + 45480.

Almost surely, 2^311344664 is an apocalyptic number.

311344664 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

311344664 is a deficient number, since it is larger than the sum of its proper divisors (308862616).

311344664 is a wasteful number, since it uses less digits than its factorization.

311344664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7787 (or 7783 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The square root of 311344664 is about 17644.9614337918. The cubic root of 311344664 is about 677.7670875876.

Adding to 311344664 its reverse (466443113), we get a palindrome (777787777).

The spelling of 311344664 in words is "three hundred eleven million, three hundred forty-four thousand, six hundred sixty-four".