243312044215 has 8 divisors (see below), whose sum is σ = 299865654720. Its totient is φ = 189388834272.

The previous prime is 243312044153. The next prime is 243312044221. The reversal of 243312044215 is 512440213342.

243312044215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243312044215 is a prime.

It is a super-2 number, since 2×243312044215² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 657599935 + ... + 657600304.

It is an arithmetic number, because the mean of its divisors is an integer number (37483206840).

Almost surely, 2^243312044215 is an apocalyptic number.

243312044215 is a deficient number, since it is larger than the sum of its proper divisors (56553610505).

243312044215 is a wasteful number, since it uses less digits than its factorization.

243312044215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315200281.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 243312044215 its reverse (512440213342), we get a palindrome (755752257557).

The spelling of 243312044215 in words is "two hundred forty-three billion, three hundred twelve million, forty-four thousand, two hundred fifteen".