243221314543 has 8 divisors (see below), whose sum is σ = 246422338880. Its totient is φ = 240023347200.

The previous prime is 243221314493. The next prime is 243221314559. The reversal of 243221314543 is 345413122342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243221314543 - 2⁹ = 243221314031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243221314499 and 243221314508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243225314543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603858 + ... + 922543.

It is an arithmetic number, because the mean of its divisors is an integer number (30802792360).

Almost surely, 2^243221314543 is an apocalyptic number.

243221314543 is a deficient number, since it is larger than the sum of its proper divisors (3201024337).

243221314543 is a wasteful number, since it uses less digits than its factorization.

243221314543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528497.

The product of its digits is 69120, while the sum is 34.

Adding to 243221314543 its reverse (345413122342), we get a palindrome (588634436885).

The spelling of 243221314543 in words is "two hundred forty-three billion, two hundred twenty-one million, three hundred fourteen thousand, five hundred forty-three".