243115222943 has 2 divisors, whose sum is σ = 243115222944. Its totient is φ = 243115222942.

The previous prime is 243115222891. The next prime is 243115222951. The reversal of 243115222943 is 349222511342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243115222943 - 2⁶ = 243115222879 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243115222897 and 243115222906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243115222843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121557611471 + 121557611472.

It is an arithmetic number, because the mean of its divisors is an integer number (121557611472).

Almost surely, 2^243115222943 is an apocalyptic number.

243115222943 is a deficient number, since it is larger than the sum of its proper divisors (1).

243115222943 is an equidigital number, since it uses as much as digits as its factorization.

243115222943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 38.

The spelling of 243115222943 in words is "two hundred forty-three billion, one hundred fifteen million, two hundred twenty-two thousand, nine hundred forty-three".