404342331 has 32 divisors (see below), whose sum is σ = 609638400. Its totient is φ = 237027840.

The previous prime is 404342321. The next prime is 404342357. The reversal of 404342331 is 133243404.

It is not a de Polignac number, because 404342331 - 2⁵ = 404342299 is a prime.

It is a super-2 number, since 2×404342331² = 326985441277027122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404342321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41440 + ... + 50258.

It is an arithmetic number, because the mean of its divisors is an integer number (19051200).

Almost surely, 2^404342331 is an apocalyptic number.

404342331 is a deficient number, since it is larger than the sum of its proper divisors (205296069).

404342331 is a wasteful number, since it uses less digits than its factorization.

404342331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8899.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 404342331 is about 20108.2652409401. The cubic root of 404342331 is about 739.4629235412.

Adding to 404342331 its reverse (133243404), we get a palindrome (537585735).

The spelling of 404342331 in words is "four hundred four million, three hundred forty-two thousand, three hundred thirty-one".