204343 has 4 divisors (see below), whose sum is σ = 206080. Its totient is φ = 202608.

The previous prime is 204331. The next prime is 204353. The reversal of 204343 is 343402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204343 - 2⁵ = 204311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204353) 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 in 3 ways as a sum of consecutive naturals, for example, 678 + ... + 931.

It is an arithmetic number, because the mean of its divisors is an integer number (51520).

2²⁰⁴³⁴³ is an apocalyptic number.

204343 is a deficient number, since it is larger than the sum of its proper divisors (1737).

204343 is a wasteful number, since it uses less digits than its factorization.

204343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 204343 is about 452.0431395343. The cubic root of 204343 is about 58.9006275137.

Adding to 204343 its reverse (343402), we get a palindrome (547745).

The spelling of 204343 in words is "two hundred four thousand, three hundred forty-three", and thus it is an iban number.