204103 has 4 divisors (see below), whose sum is σ = 208008. Its totient is φ = 200200.

The previous prime is 204101. The next prime is 204107. The reversal of 204103 is 301402.

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 204103 - 2¹ = 204101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204101) 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, 1873 + ... + 1978.

It is an arithmetic number, because the mean of its divisors is an integer number (52002).

2²⁰⁴¹⁰³ is an apocalyptic number.

204103 is a deficient number, since it is larger than the sum of its proper divisors (3905).

204103 is an equidigital number, since it uses as much as digits as its factorization.

204103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 204103 is about 451.7776001530. Note that the first 3 decimals coincide. The cubic root of 204103 is about 58.8775589664.

Adding to 204103 its reverse (301402), we get a palindrome (505505).

It can be divided in two parts, 204 and 103, that multiplied together give a palindrome (21012).

The spelling of 204103 in words is "two hundred four thousand, one hundred three", and thus it is an iban number.