243124031243 has 2 divisors, whose sum is σ = 243124031244. Its totient is φ = 243124031242.

The previous prime is 243124031239. The next prime is 243124031273. The reversal of 243124031243 is 342130421342.

243124031243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243124031243 - 2² = 243124031239 is a prime.

It is not a weakly prime, because it can be changed into another prime (243124031273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121562015621 + 121562015622.

It is an arithmetic number, because the mean of its divisors is an integer number (121562015622).

Almost surely, 2^243124031243 is an apocalyptic number.

243124031243 is a deficient number, since it is larger than the sum of its proper divisors (1).

243124031243 is an equidigital number, since it uses as much as digits as its factorization.

243124031243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 243124031243 its reverse (342130421342), we get a palindrome (585254452585).

The spelling of 243124031243 in words is "two hundred forty-three billion, one hundred twenty-four million, thirty-one thousand, two hundred forty-three".