204103123 has 8 divisors (see below), whose sum is σ = 235571040. Its totient is φ = 173212800.

The previous prime is 204103121. The next prime is 204103129. The reversal of 204103123 is 321301402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204103123 - 2¹ = 204103121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204103097 and 204103106.

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 7 ways as a sum of consecutive naturals, for example, 143638 + ... + 145051.

It is an arithmetic number, because the mean of its divisors is an integer number (29446380).

Almost surely, 2^204103123 is an apocalyptic number.

204103123 is a deficient number, since it is larger than the sum of its proper divisors (31467917).

204103123 is a wasteful number, since it uses less digits than its factorization.

204103123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288797.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 204103123 is about 14286.4664280570. The cubic root of 204103123 is about 588.7757079363.

Adding to 204103123 its reverse (321301402), we get a palindrome (525404525).

The spelling of 204103123 in words is "two hundred four million, one hundred three thousand, one hundred twenty-three".