243240330220 has 24 divisors (see below), whose sum is σ = 511083746208. Its totient is φ = 97242979200.

The previous prime is 243240330209. The next prime is 243240330233. The reversal of 243240330220 is 22033042342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3284521 + ... + 3357760.

It is an arithmetic number, because the mean of its divisors is an integer number (21295156092).

Almost surely, 2^243240330220 is an apocalyptic number.

243240330220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243240330220 is an abundant number, since it is smaller than the sum of its proper divisors (267843415988).

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

243240330220 is a wasteful number, since it uses less digits than its factorization.

243240330220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6644121 (or 6644119 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 243240330220 its reverse (22033042342), we get a palindrome (265273372562).

The spelling of 243240330220 in words is "two hundred forty-three billion, two hundred forty million, three hundred thirty thousand, two hundred twenty".