243243405211 has 8 divisors (see below), whose sum is σ = 249818691584. Its totient is φ = 236709867240.

The previous prime is 243243405199. The next prime is 243243405263. The reversal of 243243405211 is 112504342342.

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 243243405211 - 2²³ = 243235016603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243243405281) 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, 10425291 + ... + 10448596.

It is an arithmetic number, because the mean of its divisors is an integer number (31227336448).

Almost surely, 2^243243405211 is an apocalyptic number.

243243405211 is a deficient number, since it is larger than the sum of its proper divisors (6575286373).

243243405211 is a wasteful number, since it uses less digits than its factorization.

243243405211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20874201.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 243243405211 its reverse (112504342342), we get a palindrome (355747747553).

The spelling of 243243405211 in words is "two hundred forty-three billion, two hundred forty-three million, four hundred five thousand, two hundred eleven".