243312314443 has 4 divisors (see below), whose sum is σ = 265431615768. Its totient is φ = 221193013120.

The previous prime is 243312314423. The next prime is 243312314449. The reversal of 243312314443 is 344413213342.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243312314443 - 2¹⁷ = 243312183371 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243312314399 and 243312314408.

It is not an unprimeable number, because it can be changed into a prime (243312314449) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11059650646 + ... + 11059650667.

It is an arithmetic number, because the mean of its divisors is an integer number (66357903942).

Almost surely, 2^243312314443 is an apocalyptic number.

243312314443 is a deficient number, since it is larger than the sum of its proper divisors (22119301325).

243312314443 is a wasteful number, since it uses less digits than its factorization.

243312314443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22119301324.

The product of its digits is 82944, while the sum is 34.

Adding to 243312314443 its reverse (344413213342), we get a palindrome (587725527785).

It can be divided in two parts, 243312 and 314443, that added together give a palindrome (557755).

The spelling of 243312314443 in words is "two hundred forty-three billion, three hundred twelve million, three hundred fourteen thousand, four hundred forty-three".