204203243 has 4 divisors (see below), whose sum is σ = 204396768. Its totient is φ = 204009720.

The previous prime is 204203227. The next prime is 204203267. The reversal of 204203243 is 342302402.

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 204203243 - 2⁴ = 204203227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204203213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95171 + ... + 97292.

It is an arithmetic number, because the mean of its divisors is an integer number (51099192).

Almost surely, 2^204203243 is an apocalyptic number.

204203243 is a deficient number, since it is larger than the sum of its proper divisors (193525).

204203243 is a wasteful number, since it uses less digits than its factorization.

204203243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193524.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 204203243 is about 14289.9700139643. The cubic root of 204203243 is about 588.8719641603.

Adding to 204203243 its reverse (342302402), we get a palindrome (546505645).

The spelling of 204203243 in words is "two hundred four million, two hundred three thousand, two hundred forty-three".