204343021320 has 128 divisors (see below), whose sum is σ = 651308083200. Its totient is φ = 51190465536.

The previous prime is 204343021249. The next prime is 204343021327. The reversal of 204343021320 is 23120343402.

204343021320 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 (24).

It is not an unprimeable number, because it can be changed into a prime (204343021327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 664744 + ... + 922263.

It is an arithmetic number, because the mean of its divisors is an integer number (5088344400).

Almost surely, 2^204343021320 is an apocalyptic number.

204343021320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204343021320 is an abundant number, since it is smaller than the sum of its proper divisors (446965061880).

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

204343021320 is a wasteful number, since it uses less digits than its factorization.

204343021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1587087 (or 1587083 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 204343021320 its reverse (23120343402), we get a palindrome (227463364722).

The spelling of 204343021320 in words is "two hundred four billion, three hundred forty-three million, twenty-one thousand, three hundred twenty".