243310503113 has 2 divisors, whose sum is σ = 243310503114. Its totient is φ = 243310503112.

The previous prime is 243310503101. The next prime is 243310503127. The reversal of 243310503113 is 311305013342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134246761609 + 109063741504 = 366397^2 + 330248^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243310503113 is a prime.

It is not a weakly prime, because it can be changed into another prime (243310503413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121655251556 + 121655251557.

It is an arithmetic number, because the mean of its divisors is an integer number (121655251557).

Almost surely, 2^243310503113 is an apocalyptic number.

It is an amenable number.

243310503113 is a deficient number, since it is larger than the sum of its proper divisors (1).

243310503113 is an equidigital number, since it uses as much as digits as its factorization.

243310503113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 243310503113 its reverse (311305013342), we get a palindrome (554615516455).

The spelling of 243310503113 in words is "two hundred forty-three billion, three hundred ten million, five hundred three thousand, one hundred thirteen".