243115221304 has 64 divisors (see below), whose sum is σ = 474930086400. Its totient is φ = 116585414400.

The previous prime is 243115221257. The next prime is 243115221329. The reversal of 243115221304 is 403122511342.

243115221304 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 4571137 + ... + 4624015.

It is an arithmetic number, because the mean of its divisors is an integer number (7420782600).

Almost surely, 2^243115221304 is an apocalyptic number.

It is an amenable number.

243115221304 is a deficient number, since it is larger than the sum of its proper divisors (231814865096).

243115221304 is a wasteful number, since it uses less digits than its factorization.

243115221304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53164 (or 53160 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 243115221304 its reverse (403122511342), we get a palindrome (646237732646).

The spelling of 243115221304 in words is "two hundred forty-three billion, one hundred fifteen million, two hundred twenty-one thousand, three hundred four".