204343321 has 16 divisors (see below), whose sum is σ = 252096768. Its totient is φ = 161294400.

The previous prime is 204343319. The next prime is 204343331. The reversal of 204343321 is 123343402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 204343321 - 2¹ = 204343319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204343292 and 204343301.

It is not an unprimeable number, because it can be changed into a prime (204343331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39516 + ... + 44386.

It is an arithmetic number, because the mean of its divisors is an integer number (15756048).

Almost surely, 2^204343321 is an apocalyptic number.

It is an amenable number.

204343321 is a deficient number, since it is larger than the sum of its proper divisors (47753447).

204343321 is a wasteful number, since it uses less digits than its factorization.

204343321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 204343321 is about 14294.8704436242. The cubic root of 204343321 is about 589.0065835578.

Adding to 204343321 its reverse (123343402), we get a palindrome (327686723).

The spelling of 204343321 in words is "two hundred four million, three hundred forty-three thousand, three hundred twenty-one".