204531105 has 16 divisors (see below), whose sum is σ = 344473920. Its totient is φ = 103341888.

The previous prime is 204531077. The next prime is 204531127. The reversal of 204531105 is 501135402.

It is not a de Polignac number, because 204531105 - 2⁵ = 204531073 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358542 + ... + 359111.

It is an arithmetic number, because the mean of its divisors is an integer number (21529620).

Almost surely, 2^204531105 is an apocalyptic number.

It is an amenable number.

204531105 is a deficient number, since it is larger than the sum of its proper divisors (139942815).

204531105 is a wasteful number, since it uses less digits than its factorization.

204531105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717680.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 204531105 is about 14301.4371655439. The cubic root of 204531105 is about 589.1869534505.

Adding to 204531105 its reverse (501135402), we get a palindrome (705666507).

The spelling of 204531105 in words is "two hundred four million, five hundred thirty-one thousand, one hundred five".