243421304100 has 72 divisors (see below), whose sum is σ = 758475829440. Its totient is φ = 59919089280.

The previous prime is 243421304099. The next prime is 243421304107. The reversal of 243421304100 is 1403124342.

243421304100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (243421304107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31203960 + ... + 31211759.

It is an arithmetic number, because the mean of its divisors is an integer number (10534386520).

Almost surely, 2^243421304100 is an apocalyptic number.

243421304100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243421304100 is an abundant number, since it is smaller than the sum of its proper divisors (515054525340).

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

243421304100 is a wasteful number, since it uses less digits than its factorization.

243421304100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62415749 (or 62415742 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 243421304100 its reverse (1403124342), we get a palindrome (244824428442).

The spelling of 243421304100 in words is "two hundred forty-three billion, four hundred twenty-one million, three hundred four thousand, one hundred".