243042967231 has 2 divisors, whose sum is σ = 243042967232. Its totient is φ = 243042967230.

The previous prime is 243042967201. The next prime is 243042967267. The reversal of 243042967231 is 132769240342.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243042967231 is a prime.

It is a super-2 number, since 2×243042967231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243042967201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121521483615 + 121521483616.

It is an arithmetic number, because the mean of its divisors is an integer number (121521483616).

Almost surely, 2^243042967231 is an apocalyptic number.

243042967231 is a deficient number, since it is larger than the sum of its proper divisors (1).

243042967231 is an equidigital number, since it uses as much as digits as its factorization.

243042967231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 43.

The spelling of 243042967231 in words is "two hundred forty-three billion, forty-two million, nine hundred sixty-seven thousand, two hundred thirty-one".