404313331 has 16 divisors (see below), whose sum is σ = 443520000. Its totient is φ = 367095456.

The previous prime is 404313323. The next prime is 404313353. The reversal of 404313331 is 133313404.

It is a happy number.

It is not a de Polignac number, because 404313331 - 2³ = 404313323 is a prime.

It is a super-2 number, since 2×404313331² = 326938539248631122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404313311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73950 + ... + 79228.

It is an arithmetic number, because the mean of its divisors is an integer number (27720000).

Almost surely, 2^404313331 is an apocalyptic number.

404313331 is a deficient number, since it is larger than the sum of its proper divisors (39206669).

404313331 is a wasteful number, since it uses less digits than its factorization.

404313331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5466.

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

The square root of 404313331 is about 20107.5441314945. The cubic root of 404313331 is about 739.4452446786.

Adding to 404313331 its reverse (133313404), we get a palindrome (537626735).

The spelling of 404313331 in words is "four hundred four million, three hundred thirteen thousand, three hundred thirty-one".