243324315163 has 2 divisors, whose sum is σ = 243324315164. Its totient is φ = 243324315162.

The previous prime is 243324315161. The next prime is 243324315209. The reversal of 243324315163 is 361513423342.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243324315163 - 2¹ = 243324315161 is a prime.

Together with 243324315161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (243324315161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121662157581 + 121662157582.

It is an arithmetic number, because the mean of its divisors is an integer number (121662157582).

Almost surely, 2^243324315163 is an apocalyptic number.

243324315163 is a deficient number, since it is larger than the sum of its proper divisors (1).

243324315163 is an equidigital number, since it uses as much as digits as its factorization.

243324315163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 37.

The spelling of 243324315163 in words is "two hundred forty-three billion, three hundred twenty-four million, three hundred fifteen thousand, one hundred sixty-three".