204432213 has 4 divisors (see below), whose sum is σ = 272576288. Its totient is φ = 136288140.

The previous prime is 204432169. The next prime is 204432247. The reversal of 204432213 is 312234402.

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 204432213 - 2⁶ = 204432149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 204432213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204432313) 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, 34072033 + ... + 34072038.

It is an arithmetic number, because the mean of its divisors is an integer number (68144072).

Almost surely, 2^204432213 is an apocalyptic number.

It is an amenable number.

204432213 is a deficient number, since it is larger than the sum of its proper divisors (68144075).

204432213 is an equidigital number, since it uses as much as digits as its factorization.

204432213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68144074.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 204432213 is about 14297.9793327589. The cubic root of 204432213 is about 589.0919796822.

Adding to 204432213 its reverse (312234402), we get a palindrome (516666615).

The spelling of 204432213 in words is "two hundred four million, four hundred thirty-two thousand, two hundred thirteen".