205104203 has 4 divisors (see below), whose sum is σ = 205191480. Its totient is φ = 205016928.

The previous prime is 205104191. The next prime is 205104227. The reversal of 205104203 is 302401502.

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 205104203 - 2⁴ = 205104187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205104233) 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 3 ways as a sum of consecutive naturals, for example, 40013 + ... + 44846.

It is an arithmetic number, because the mean of its divisors is an integer number (51297870).

Almost surely, 2^205104203 is an apocalyptic number.

205104203 is a deficient number, since it is larger than the sum of its proper divisors (87277).

205104203 is an equidigital number, since it uses as much as digits as its factorization.

205104203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87276.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 205104203 is about 14321.4595275761. The cubic root of 205104203 is about 589.7367426500.

Adding to 205104203 its reverse (302401502), we get a palindrome (507505705).

The spelling of 205104203 in words is "two hundred five million, one hundred four thousand, two hundred three".