404322331 has 4 divisors (see below), whose sum is σ = 462082672. Its totient is φ = 346561992.

The previous prime is 404322329. The next prime is 404322349. The reversal of 404322331 is 133223404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 404322331 - 2¹ = 404322329 is a prime.

It is a super-2 number, since 2×404322331² = 326953094690547122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404322371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28880160 + ... + 28880173.

It is an arithmetic number, because the mean of its divisors is an integer number (115520668).

Almost surely, 2^404322331 is an apocalyptic number.

404322331 is a deficient number, since it is larger than the sum of its proper divisors (57760341).

404322331 is an equidigital number, since it uses as much as digits as its factorization.

404322331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57760340.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 404322331 is about 20107.7679268486. The cubic root of 404322331 is about 739.4507313126.

Adding to 404322331 its reverse (133223404), we get a palindrome (537545735).

The spelling of 404322331 in words is "four hundred four million, three hundred twenty-two thousand, three hundred thirty-one".