311327228 has 12 divisors (see below), whose sum is σ = 544973352. Its totient is φ = 155620560.

The previous prime is 311327207. The next prime is 311327279. The reversal of 311327228 is 822723113.

It is a self number, because there is not a number n which added to its sum of digits gives 311327228.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9923 + ... + 26853.

It is an arithmetic number, because the mean of its divisors is an integer number (45414446).

Almost surely, 2^311327228 is an apocalyptic number.

It is an amenable number.

311327228 is a deficient number, since it is larger than the sum of its proper divisors (233646124).

311327228 is a wasteful number, since it uses less digits than its factorization.

311327228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21532 (or 21530 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 311327228 is about 17644.4673481519. The cubic root of 311327228 is about 677.7544351920.

The spelling of 311327228 in words is "three hundred eleven million, three hundred twenty-seven thousand, two hundred twenty-eight".