331808404 has 12 divisors (see below), whose sum is σ = 580957300. Its totient is φ = 165820608.

The previous prime is 331808377. The next prime is 331808413. The reversal of 331808404 is 404808133.

It can be written as a sum of positive squares in 2 ways, for example, as 297562500 + 34245904 = 17250^2 + 5852^2 .

It is a super-2 number, since 2×331808404² = 220193633930054432, which contains 22 as substring.

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, 11499 + ... + 28210.

Almost surely, 2^331808404 is an apocalyptic number.

It is an amenable number.

331808404 is a deficient number, since it is larger than the sum of its proper divisors (249148896).

331808404 is a wasteful number, since it uses less digits than its factorization.

331808404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41802 (or 41800 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 331808404 is about 18215.6088012452. The cubic root of 331808404 is about 692.3023309455.

The spelling of 331808404 in words is "three hundred thirty-one million, eight hundred eight thousand, four hundred four".