243243123411 has 4 divisors (see below), whose sum is σ = 324324164552. Its totient is φ = 162162082272.

The previous prime is 243243123311. The next prime is 243243123443. The reversal of 243243123411 is 114321342342.

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

It is not a de Polignac number, because 243243123411 - 2²³ = 243234734803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243243123311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40540520566 + ... + 40540520571.

It is an arithmetic number, because the mean of its divisors is an integer number (81081041138).

Almost surely, 2^243243123411 is an apocalyptic number.

243243123411 is a deficient number, since it is larger than the sum of its proper divisors (81081041141).

243243123411 is an equidigital number, since it uses as much as digits as its factorization.

243243123411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81081041140.

The product of its digits is 13824, while the sum is 30.

Adding to 243243123411 its reverse (114321342342), we get a palindrome (357564465753).

The spelling of 243243123411 in words is "two hundred forty-three billion, two hundred forty-three million, one hundred twenty-three thousand, four hundred eleven".