204312134 has 32 divisors (see below), whose sum is σ = 352477440. Its totient is φ = 88099200.

The previous prime is 204312131. The next prime is 204312169. The reversal of 204312134 is 431213402.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204312131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19004 + ... + 27744.

It is an arithmetic number, because the mean of its divisors is an integer number (11014920).

Almost surely, 2^204312134 is an apocalyptic number.

204312134 is a deficient number, since it is larger than the sum of its proper divisors (148165306).

204312134 is a wasteful number, since it uses less digits than its factorization.

204312134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8816.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 204312134 is about 14293.7795561566. The cubic root of 204312134 is about 588.9766171875.

Adding to 204312134 its reverse (431213402), we get a palindrome (635525536).

The spelling of 204312134 in words is "two hundred four million, three hundred twelve thousand, one hundred thirty-four".