404313321 has 4 divisors (see below), whose sum is σ = 539084432. Its totient is φ = 269542212.

The previous prime is 404313311. The next prime is 404313323. The reversal of 404313321 is 123313404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 404313321 - 2⁵ = 404313289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404313323) 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, 67385551 + ... + 67385556.

It is an arithmetic number, because the mean of its divisors is an integer number (134771108).

Almost surely, 2^404313321 is an apocalyptic number.

It is an amenable number.

404313321 is a deficient number, since it is larger than the sum of its proper divisors (134771111).

404313321 is a wasteful number, since it uses less digits than its factorization.

404313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134771110.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 404313321 is about 20107.5438828316. The cubic root of 404313321 is about 739.4452385823.

Adding to 404313321 its reverse (123313404), we get a palindrome (527626725).

The spelling of 404313321 in words is "four hundred four million, three hundred thirteen thousand, three hundred twenty-one".