243424002320 has 40 divisors (see below), whose sum is σ = 599252620824. Its totient is φ = 91641976832.

The previous prime is 243424002319. The next prime is 243424002323. The reversal of 243424002320 is 23200424342.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 64379927824 + 179044074496 = 253732^2 + 423136^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 243424002320.

It is not an unprimeable number, because it can be changed into a prime (243424002323) 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, 89492759 + ... + 89495478.

Almost surely, 2^243424002320 is an apocalyptic number.

243424002320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243424002320 is an abundant number, since it is smaller than the sum of its proper divisors (355828618504).

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

243424002320 is a wasteful number, since it uses less digits than its factorization.

243424002320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178988267 (or 178988261 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 26.

Adding to 243424002320 its reverse (23200424342), we get a palindrome (266624426662).

The spelling of 243424002320 in words is "two hundred forty-three billion, four hundred twenty-four million, two thousand, three hundred twenty".