204523321 has 8 divisors (see below), whose sum is σ = 205801344. Its totient is φ = 203249760.

The previous prime is 204523279. The next prime is 204523339. The reversal of 204523321 is 123325402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204523321 - 2⁹ = 204522809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204523292 and 204523301.

It is not an unprimeable number, because it can be changed into a prime (204521321) 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 in 7 ways as a sum of consecutive naturals, for example, 140620 + ... + 142066.

It is an arithmetic number, because the mean of its divisors is an integer number (25725168).

Almost surely, 2^204523321 is an apocalyptic number.

It is an amenable number.

204523321 is a deficient number, since it is larger than the sum of its proper divisors (1278023).

204523321 is a wasteful number, since it uses less digits than its factorization.

204523321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 204523321 is about 14301.1650224728. The cubic root of 204523321 is about 589.1794789730.

Adding to 204523321 its reverse (123325402), we get a palindrome (327848723).

The spelling of 204523321 in words is "two hundred four million, five hundred twenty-three thousand, three hundred twenty-one".