204101831205 has 12 divisors (see below), whose sum is σ = 353776507500. Its totient is φ = 108854309952.

The previous prime is 204101831177. The next prime is 204101831299. The reversal of 204101831205 is 502138101402.

204101831205 is a `hidden beast` number, since 2 + 0 + 410 + 18 + 31 + 205 = 666.

204101831205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 118996021764 + 85105809441 = 344958^2 + 291729^2 .

It is not a de Polignac number, because 204101831205 - 2⁸ = 204101830949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2267798080 + ... + 2267798169.

It is an arithmetic number, because the mean of its divisors is an integer number (29481375625).

Almost surely, 2^204101831205 is an apocalyptic number.

It is an amenable number.

204101831205 is a deficient number, since it is larger than the sum of its proper divisors (149674676295).

204101831205 is a wasteful number, since it uses less digits than its factorization.

204101831205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535596260 (or 4535596257 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 204101831205 its reverse (502138101402), we get a palindrome (706239932607).

The spelling of 204101831205 in words is "two hundred four billion, one hundred one million, eight hundred thirty-one thousand, two hundred five".