204320100 has 36 divisors (see below), whose sum is σ = 591167024. Its totient is φ = 54485280.

The previous prime is 204320099. The next prime is 204320107. The reversal of 204320100 is 1023402.

204320100 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 (12).

It is not an unprimeable number, because it can be changed into a prime (204320107) 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, 340234 + ... + 340833.

Almost surely, 2^204320100 is an apocalyptic number.

204320100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204320100 is an abundant number, since it is smaller than the sum of its proper divisors (386846924).

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

204320100 is a wasteful number, since it uses less digits than its factorization.

204320100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681084 (or 681077 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 204320100 is about 14294.0582061219. The cubic root of 204320100 is about 588.9842716958.

Adding to 204320100 its reverse (1023402), we get a palindrome (205343502).

The spelling of 204320100 in words is "two hundred four million, three hundred twenty thousand, one hundred".