204040223 has 2 divisors, whose sum is σ = 204040224. Its totient is φ = 204040222.

The previous prime is 204040217. The next prime is 204040247. The reversal of 204040223 is 322040402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204040223 - 2¹² = 204036127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204040253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102020111 + 102020112.

It is an arithmetic number, because the mean of its divisors is an integer number (102020112).

Almost surely, 2^204040223 is an apocalyptic number.

204040223 is a deficient number, since it is larger than the sum of its proper divisors (1).

204040223 is an equidigital number, since it uses as much as digits as its factorization.

204040223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 204040223 is about 14284.2648743294. The cubic root of 204040223 is about 588.7152192375.

Adding to 204040223 its reverse (322040402), we get a palindrome (526080625).

The spelling of 204040223 in words is "two hundred four million, forty thousand, two hundred twenty-three".