204240312 has 64 divisors (see below), whose sum is σ = 600717600. Its totient is φ = 64074240.

The previous prime is 204240263. The next prime is 204240317. The reversal of 204240312 is 213042402.

204240312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204240317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24139 + ... + 31482.

Almost surely, 2^204240312 is an apocalyptic number.

It is an amenable number.

204240312 is an abundant number, since it is smaller than the sum of its proper divisors (396477288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204240312 is a wasteful number, since it uses less digits than its factorization.

204240312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55653 (or 55643 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 204240312 is about 14291.2669837212. The cubic root of 204240312 is about 588.9075946328.

Adding to 204240312 its reverse (213042402), we get a palindrome (417282714).

The spelling of 204240312 in words is "two hundred four million, two hundred forty thousand, three hundred twelve".