204131320 has 32 divisors (see below), whose sum is σ = 469980720. Its totient is φ = 79752960.

The previous prime is 204131309. The next prime is 204131321. The reversal of 204131320 is 23131402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 204131294 and 204131303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204131321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57621 + ... + 61060.

Almost surely, 2^204131320 is an apocalyptic number.

204131320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204131320 is an abundant number, since it is smaller than the sum of its proper divisors (265849400).

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

204131320 is a wasteful number, since it uses less digits than its factorization.

204131320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118735 (or 118731 counting only the distinct ones).

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

The square root of 204131320 is about 14287.4532370188. The cubic root of 204131320 is about 588.8028199569.

Adding to 204131320 its reverse (23131402), we get a palindrome (227262722).

The spelling of 204131320 in words is "two hundred four million, one hundred thirty-one thousand, three hundred twenty".