223431404 has 12 divisors (see below), whose sum is σ = 446862864. Its totient is φ = 95756304.

The previous prime is 223431379. The next prime is 223431409. The reversal of 223431404 is 404134322.

223431404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

223431404 is an admirable number.

It is a super-2 number, since 2×223431404² = 99843184586822432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223431404.

It is not an unprimeable number, because it can be changed into a prime (223431409) 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, 3989819 + ... + 3989874.

It is an arithmetic number, because the mean of its divisors is an integer number (37238572).

Almost surely, 2^223431404 is an apocalyptic number.

It is an amenable number.

223431404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

223431404 is a wasteful number, since it uses less digits than its factorization.

223431404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7979704 (or 7979702 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 223431404 is about 14947.6220182342. The cubic root of 223431404 is about 606.8034921967.

Adding to 223431404 its reverse (404134322), we get a palindrome (627565726).

The spelling of 223431404 in words is "two hundred twenty-three million, four hundred thirty-one thousand, four hundred four".