204312312 has 48 divisors (see below), whose sum is σ = 577409040. Its totient is φ = 65142528.

The previous prime is 204312293. The next prime is 204312319. The reversal of 204312312 is 213213402.

204312312 is a `hidden beast` number, since 2 + 0 + 431 + 231 + 2 = 666.

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 (204312319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60033 + ... + 63344.

It is an arithmetic number, because the mean of its divisors is an integer number (12029355).

Almost surely, 2^204312312 is an apocalyptic number.

It is an amenable number.

204312312 is an abundant number, since it is smaller than the sum of its proper divisors (373096728).

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

204312312 is a wasteful number, since it uses less digits than its factorization.

204312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123412 (or 123405 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 204312312 is about 14293.7857826400. The cubic root of 204312312 is about 588.9767882294.

Adding to 204312312 its reverse (213213402), we get a palindrome (417525714).

The spelling of 204312312 in words is "two hundred four million, three hundred twelve thousand, three hundred twelve".