243124031273 has 2 divisors, whose sum is σ = 243124031274. Its totient is φ = 243124031272.

The previous prime is 243124031243. The next prime is 243124031291. The reversal of 243124031273 is 372130421342.

243124031273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231907738624 + 11216292649 = 481568^2 + 105907^2 .

It is a cyclic number.

It is not a de Polignac number, because 243124031273 - 2¹⁶ = 243123965737 is a prime.

It is not a weakly prime, because it can be changed into another prime (243124031243) 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, 121562015636 + 121562015637.

It is an arithmetic number, because the mean of its divisors is an integer number (121562015637).

Almost surely, 2^243124031273 is an apocalyptic number.

It is an amenable number.

243124031273 is a deficient number, since it is larger than the sum of its proper divisors (1).

243124031273 is an equidigital number, since it uses as much as digits as its factorization.

243124031273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 32.

The spelling of 243124031273 in words is "two hundred forty-three billion, one hundred twenty-four million, thirty-one thousand, two hundred seventy-three".