243404340112 has 40 divisors (see below), whose sum is σ = 475803263160. Its totient is φ = 120621096960.

The previous prime is 243404340077. The next prime is 243404340149. The reversal of 243404340112 is 211043404342.

It can be written as a sum of positive squares in 4 ways, for example, as 20510822656 + 222893517456 = 143216^2 + 472116^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684162 + ... + 977182.

It is an arithmetic number, because the mean of its divisors is an integer number (11895081579).

Almost surely, 2^243404340112 is an apocalyptic number.

It is an amenable number.

243404340112 is a deficient number, since it is larger than the sum of its proper divisors (232398923048).

243404340112 is a wasteful number, since it uses less digits than its factorization.

243404340112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293491 (or 293485 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 243404340112 its reverse (211043404342), we get a palindrome (454447744454).

The spelling of 243404340112 in words is "two hundred forty-three billion, four hundred four million, three hundred forty thousand, one hundred twelve".