243264217323 has 16 divisors (see below), whose sum is σ = 350125413120. Its totient is φ = 149775868704.

The previous prime is 243264217289. The next prime is 243264217351. The reversal of 243264217323 is 323712462342.

It is a de Polignac number, because none of the positive numbers 2^k-243264217323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243264217363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60783661 + ... + 60787662.

It is an arithmetic number, because the mean of its divisors is an integer number (21882838320).

Almost surely, 2^243264217323 is an apocalyptic number.

243264217323 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

243264217323 is a deficient number, since it is larger than the sum of its proper divisors (106861195797).

243264217323 is a wasteful number, since it uses less digits than its factorization.

243264217323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121571378.

The product of its digits is 290304, while the sum is 39.

Adding to 243264217323 its reverse (323712462342), we get a palindrome (566976679665).

The spelling of 243264217323 in words is "two hundred forty-three billion, two hundred sixty-four million, two hundred seventeen thousand, three hundred twenty-three".