204510113 has 4 divisors (see below), whose sum is σ = 208861440. Its totient is φ = 200158788.

The previous prime is 204510109. The next prime is 204510133. The reversal of 204510113 is 311015402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204510113 - 2² = 204510109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204510091 and 204510100.

It is not an unprimeable number, because it can be changed into a prime (204510133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2175593 + ... + 2175686.

It is an arithmetic number, because the mean of its divisors is an integer number (52215360).

Almost surely, 2^204510113 is an apocalyptic number.

It is an amenable number.

204510113 is a deficient number, since it is larger than the sum of its proper divisors (4351327).

204510113 is an equidigital number, since it uses as much as digits as its factorization.

204510113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4351326.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 204510113 is about 14300.7032344567. The cubic root of 204510113 is about 589.1667957412.

Adding to 204510113 its reverse (311015402), we get a palindrome (515525515).

The spelling of 204510113 in words is "two hundred four million, five hundred ten thousand, one hundred thirteen".