204203 has 4 divisors (see below), whose sum is σ = 209760. Its totient is φ = 198648.

The previous prime is 204173. The next prime is 204233. The reversal of 204203 is 302402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302402 = 2 ⋅151201.

It is an interprime number because it is at equal distance from previous prime (204173) and next prime (204233).

It is a cyclic number.

It is not a de Polignac number, because 204203 - 2⁸ = 203947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204233) 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, 2723 + ... + 2796.

It is an arithmetic number, because the mean of its divisors is an integer number (52440).

2²⁰⁴²⁰³ is an apocalyptic number.

204203 is a deficient number, since it is larger than the sum of its proper divisors (5557).

204203 is an equidigital number, since it uses as much as digits as its factorization.

204203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5556.

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 204203 is about 451.8882605247. Note that the first 3 decimals coincide. The cubic root of 204203 is about 58.8871730576.

Adding to 204203 its reverse (302402), we get a palindrome (506605).

The spelling of 204203 in words is "two hundred four thousand, two hundred three", and thus it is an iban number.