311990644224 has 120 divisors (see below), whose sum is σ = 1029058533360. Its totient is φ = 89140174848.

The previous prime is 311990644223. The next prime is 311990644241. The reversal of 311990644224 is 422446099113.

311990644224 is a `hidden beast` number, since 3 + 119 + 90 + 6 + 442 + 2 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 311990644224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311990644223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4803909 + ... + 4868420.

It is an arithmetic number, because the mean of its divisors is an integer number (8575487778).

Almost surely, 2^311990644224 is an apocalyptic number.

It is an amenable number.

311990644224 is an abundant number, since it is smaller than the sum of its proper divisors (717067889136).

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

311990644224 is an equidigital number, since it uses as much as digits as its factorization.

311990644224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9672360 (or 9672341 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 311990644224 in words is "three hundred eleven billion, nine hundred ninety million, six hundred forty-four thousand, two hundred twenty-four".