243213341123 has 4 divisors (see below), whose sum is σ = 243216962880. Its totient is φ = 243209719368.

The previous prime is 243213341083. The next prime is 243213341149. The reversal of 243213341123 is 321143312342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321143312342 = 2 ⋅160571656171.

It is a cyclic number.

It is not a de Polignac number, because 243213341123 - 2³⁶ = 174493864387 is a prime.

It is a super-2 number, since 2×243213341123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243213341153) 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, 1708208 + ... + 1845101.

It is an arithmetic number, because the mean of its divisors is an integer number (60804240720).

Almost surely, 2^243213341123 is an apocalyptic number.

243213341123 is a deficient number, since it is larger than the sum of its proper divisors (3621757).

243213341123 is an equidigital number, since it uses as much as digits as its factorization.

243213341123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3621756.

The product of its digits is 10368, while the sum is 29.

Adding to 243213341123 its reverse (321143312342), we get a palindrome (564356653465).

The spelling of 243213341123 in words is "two hundred forty-three billion, two hundred thirteen million, three hundred forty-one thousand, one hundred twenty-three".