331305404 has 6 divisors (see below), whose sum is σ = 579784464. Its totient is φ = 165652700.

The previous prime is 331305389. The next prime is 331305407. The reversal of 331305404 is 404503133.

331305404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 331305404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331305407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41413172 + ... + 41413179.

It is an arithmetic number, because the mean of its divisors is an integer number (96630744).

Almost surely, 2^331305404 is an apocalyptic number.

It is an amenable number.

331305404 is a deficient number, since it is larger than the sum of its proper divisors (248479060).

331305404 is a wasteful number, since it uses less digits than its factorization.

331305404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82826355 (or 82826353 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 331305404 is about 18201.7967244995. The cubic root of 331305404 is about 691.9523255605.

Adding to 331305404 its reverse (404503133), we get a palindrome (735808537).

The spelling of 331305404 in words is "three hundred thirty-one million, three hundred five thousand, four hundred four".