204311320 has 32 divisors (see below), whose sum is σ = 460947600. Its totient is φ = 81502848.

The previous prime is 204311311. The next prime is 204311339. The reversal of 204311320 is 23113402.

It is a happy number.

204311320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 204311294 and 204311303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8422 + ... + 21898.

Almost surely, 2^204311320 is an apocalyptic number.

204311320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204311320 is an abundant number, since it is smaller than the sum of its proper divisors (256636280).

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

204311320 is a wasteful number, since it uses less digits than its factorization.

204311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13867 (or 13863 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 204311320 is about 14293.7510822037. The cubic root of 204311320 is about 588.9758350058.

Adding to 204311320 its reverse (23113402), we get a palindrome (227424722).

The spelling of 204311320 in words is "two hundred four million, three hundred eleven thousand, three hundred twenty".