243305311044 has 12 divisors (see below), whose sum is σ = 567712392464. Its totient is φ = 81101770344.

The previous prime is 243305311043. The next prime is 243305311061. The reversal of 243305311044 is 440113503342.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (243305311043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10137721282 + ... + 10137721305.

Almost surely, 2^243305311044 is an apocalyptic number.

It is an amenable number.

243305311044 is an abundant number, since it is smaller than the sum of its proper divisors (324407081420).

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

243305311044 is a wasteful number, since it uses less digits than its factorization.

243305311044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20275442594 (or 20275442592 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 243305311044 its reverse (440113503342), we get a palindrome (683418814386).

The spelling of 243305311044 in words is "two hundred forty-three billion, three hundred five million, three hundred eleven thousand, forty-four".