243100235813 has 2 divisors, whose sum is σ = 243100235814. Its totient is φ = 243100235812.

The previous prime is 243100235803. The next prime is 243100235827. The reversal of 243100235813 is 318532001342.

243100235813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195666444964 + 47433790849 = 442342^2 + 217793^2 .

It is a cyclic number.

It is not a de Polignac number, because 243100235813 - 2⁴ = 243100235797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 243100235813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243100235803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121550117906 + 121550117907.

It is an arithmetic number, because the mean of its divisors is an integer number (121550117907).

Almost surely, 2^243100235813 is an apocalyptic number.

It is an amenable number.

243100235813 is a deficient number, since it is larger than the sum of its proper divisors (1).

243100235813 is an equidigital number, since it uses as much as digits as its factorization.

243100235813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 243100235813 in words is "two hundred forty-three billion, one hundred million, two hundred thirty-five thousand, eight hundred thirteen".