404311223 has 4 divisors (see below), whose sum is σ = 404986800. Its totient is φ = 403635648.

The previous prime is 404311217. The next prime is 404311307. The reversal of 404311223 is 322113404.

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

It is a cyclic number.

It is not a de Polignac number, because 404311223 - 2²⁰ = 403262647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404311195 and 404311204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404311213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336890 + ... + 338087.

It is an arithmetic number, because the mean of its divisors is an integer number (101246700).

Almost surely, 2^404311223 is an apocalyptic number.

404311223 is a deficient number, since it is larger than the sum of its proper divisors (675577).

404311223 is an equidigital number, since it uses as much as digits as its factorization.

404311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675576.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 404311223 is about 20107.4917132894. The cubic root of 404311223 is about 739.4439595752.

Adding to 404311223 its reverse (322113404), we get a palindrome (726424627).

The spelling of 404311223 in words is "four hundred four million, three hundred eleven thousand, two hundred twenty-three".