331331404 has 24 divisors (see below), whose sum is σ = 585043760. Its totient is φ = 164182464.

The previous prime is 331331347. The next prime is 331331419. The reversal of 331331404 is 404133133.

It is a happy number.

It is a super-2 number, since 2×331331404² = 219560998553222432, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399262 + ... + 400090.

Almost surely, 2^331331404 is an apocalyptic number.

It is an amenable number.

331331404 is a deficient number, since it is larger than the sum of its proper divisors (253712356).

331331404 is a wasteful number, since it uses less digits than its factorization.

331331404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609 (or 1607 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 331331404 is about 18202.5109256937. The cubic root of 331331404 is about 691.9704259695.

Adding to 331331404 its reverse (404133133), we get a palindrome (735464537).

The spelling of 331331404 in words is "three hundred thirty-one million, three hundred thirty-one thousand, four hundred four".