2931328 has 16 divisors (see below), whose sum is σ = 5840010. Its totient is φ = 1465600.

The previous prime is 2931319. The next prime is 2931413. The reversal of 2931328 is 8231392.

It can be written as a sum of positive squares in only one way, i.e., 1658944 + 1272384 = 1288^2 + 1128^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2931296 and 2931305.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11323 + ... + 11578.

2^2931328 is an apocalyptic number.

It is an amenable number.

2931328 is a deficient number, since it is larger than the sum of its proper divisors (2908682).

2931328 is an equidigital number, since it uses as much as digits as its factorization.

2931328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22915 (or 22903 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 2931328 is about 1712.1121458596. The cubic root of 2931328 is about 143.1159832996.

The spelling of 2931328 in words is "two million, nine hundred thirty-one thousand, three hundred twenty-eight".