204106523 has 4 divisors (see below), whose sum is σ = 204473520. Its totient is φ = 203739528.

The previous prime is 204106519. The next prime is 204106603. The reversal of 204106523 is 325601402.

204106523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 204106523 - 2² = 204106519 is a prime.

It is a super-2 number, since 2×204106523² = 83318945462299058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204106223) 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, 182663 + ... + 183776.

It is an arithmetic number, because the mean of its divisors is an integer number (51118380).

Almost surely, 2^204106523 is an apocalyptic number.

204106523 is a deficient number, since it is larger than the sum of its proper divisors (366997).

204106523 is an equidigital number, since it uses as much as digits as its factorization.

204106523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366996.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 204106523 is about 14286.5854212964. The cubic root of 204106523 is about 588.7789772417.

Adding to 204106523 its reverse (325601402), we get a palindrome (529707925).

The spelling of 204106523 in words is "two hundred four million, one hundred six thousand, five hundred twenty-three".