243002543111 has 2 divisors, whose sum is σ = 243002543112. Its totient is φ = 243002543110.

The previous prime is 243002543081. The next prime is 243002543159. The reversal of 243002543111 is 111345200342.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243002543111 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243002543171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121501271555 + 121501271556.

It is an arithmetic number, because the mean of its divisors is an integer number (121501271556).

Almost surely, 2^243002543111 is an apocalyptic number.

243002543111 is a deficient number, since it is larger than the sum of its proper divisors (1).

243002543111 is an equidigital number, since it uses as much as digits as its factorization.

243002543111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 243002543111 its reverse (111345200342), we get a palindrome (354347743453).

The spelling of 243002543111 in words is "two hundred forty-three billion, two million, five hundred forty-three thousand, one hundred eleven".