204323130 has 96 divisors (see below), whose sum is σ = 583277760. Its totient is φ = 49213440.

The previous prime is 204323129. The next prime is 204323149. The reversal of 204323130 is 31323402.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 176634 + ... + 177786.

It is an arithmetic number, because the mean of its divisors is an integer number (6075810).

Almost surely, 2^204323130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204323130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291638880).

204323130 is an abundant number, since it is smaller than the sum of its proper divisors (378954630).

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

204323130 is a wasteful number, since it uses less digits than its factorization.

204323130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356 (or 1353 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 204323130 is about 14294.1641938240. The cubic root of 204323130 is about 588.9871831625.

Adding to 204323130 its reverse (31323402), we get a palindrome (235646532).

The spelling of 204323130 in words is "two hundred four million, three hundred twenty-three thousand, one hundred thirty".