243321312044 has 24 divisors (see below), whose sum is σ = 427020498240. Its totient is φ = 121315936896.

The previous prime is 243321312029. The next prime is 243321312079. The reversal of 243321312044 is 440213123342.

243321312044 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 243321311998 and 243321312016.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1986509 + ... + 2105435.

It is an arithmetic number, because the mean of its divisors is an integer number (17792520760).

Almost surely, 2^243321312044 is an apocalyptic number.

It is an amenable number.

243321312044 is a deficient number, since it is larger than the sum of its proper divisors (183699186196).

243321312044 is a wasteful number, since it uses less digits than its factorization.

243321312044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120377 (or 120375 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 243321312044 its reverse (440213123342), we get a palindrome (683534435386).

The spelling of 243321312044 in words is "two hundred forty-three billion, three hundred twenty-one million, three hundred twelve thousand, forty-four".