204103111 has 4 divisors (see below), whose sum is σ = 214845400. Its totient is φ = 193360824.

The previous prime is 204103099. The next prime is 204103121. The reversal of 204103111 is 111301402.

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 204103111 - 2⁵ = 204103079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204103091 and 204103100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204103121) 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, 5371116 + ... + 5371153.

It is an arithmetic number, because the mean of its divisors is an integer number (53711350).

Almost surely, 2^204103111 is an apocalyptic number.

204103111 is a deficient number, since it is larger than the sum of its proper divisors (10742289).

204103111 is a wasteful number, since it uses less digits than its factorization.

204103111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10742288.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 204103111 is about 14286.4660080791. The cubic root of 204103111 is about 588.7756963975.

Adding to 204103111 its reverse (111301402), we get a palindrome (315404513).

The spelling of 204103111 in words is "two hundred four million, one hundred three thousand, one hundred eleven".