243120216 has 16 divisors (see below), whose sum is σ = 607800600. Its totient is φ = 81040064.

The previous prime is 243120191. The next prime is 243120223. The reversal of 243120216 is 612021342.

It is a junction number, because it is equal to n+sod(n) for n = 243120192 and 243120201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5064981 + ... + 5065028.

Almost surely, 2^243120216 is an apocalyptic number.

It is an amenable number.

243120216 is an abundant number, since it is smaller than the sum of its proper divisors (364680384).

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

243120216 is a wasteful number, since it uses less digits than its factorization.

243120216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10130018 (or 10130014 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 243120216 is about 15592.3127213380. The cubic root of 243120216 is about 624.1280350358.

Adding to 243120216 its reverse (612021342), we get a palindrome (855141558).

The spelling of 243120216 in words is "two hundred forty-three million, one hundred twenty thousand, two hundred sixteen".