204232321 has 2 divisors, whose sum is σ = 204232322. Its totient is φ = 204232320.

The previous prime is 204232313. The next prime is 204232333. The reversal of 204232321 is 123232402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144865296 + 59367025 = 12036^2 + 7705^2 .

It is a cyclic number.

It is not a de Polignac number, because 204232321 - 2³ = 204232313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (204232361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102116160 + 102116161.

It is an arithmetic number, because the mean of its divisors is an integer number (102116161).

Almost surely, 2^204232321 is an apocalyptic number.

It is an amenable number.

204232321 is a deficient number, since it is larger than the sum of its proper divisors (1).

204232321 is an equidigital number, since it uses as much as digits as its factorization.

204232321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 204232321 is about 14290.9874046547. The cubic root of 204232321 is about 588.8999141021.

Adding to 204232321 its reverse (123232402), we get a palindrome (327464723).

The spelling of 204232321 in words is "two hundred four million, two hundred thirty-two thousand, three hundred twenty-one".