204430223 has 4 divisors (see below), whose sum is σ = 209416368. Its totient is φ = 199444080.

The previous prime is 204430207. The next prime is 204430231. The reversal of 204430223 is 322034402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322034402 = 2 ⋅161017201.

It is a cyclic number.

It is not a de Polignac number, because 204430223 - 2⁴ = 204430207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204430195 and 204430204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204430243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2493011 + ... + 2493092.

It is an arithmetic number, because the mean of its divisors is an integer number (52354092).

Almost surely, 2^204430223 is an apocalyptic number.

204430223 is a deficient number, since it is larger than the sum of its proper divisors (4986145).

204430223 is an equidigital number, since it uses as much as digits as its factorization.

204430223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4986144.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 204430223 is about 14297.9097423365. The cubic root of 204430223 is about 589.0900682142.

Adding to 204430223 its reverse (322034402), we get a palindrome (526464625).

The spelling of 204430223 in words is "two hundred four million, four hundred thirty thousand, two hundred twenty-three".