243113300513 has 2 divisors, whose sum is σ = 243113300514. Its totient is φ = 243113300512.

The previous prime is 243113300467. The next prime is 243113300533. The reversal of 243113300513 is 315003311342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210586456609 + 32526843904 = 458897^2 + 180352^2 .

It is a cyclic number.

It is not a de Polignac number, because 243113300513 - 2³² = 238818333217 is a prime.

It is not a weakly prime, because it can be changed into another prime (243113300533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121556650256 + 121556650257.

It is an arithmetic number, because the mean of its divisors is an integer number (121556650257).

Almost surely, 2^243113300513 is an apocalyptic number.

It is an amenable number.

243113300513 is a deficient number, since it is larger than the sum of its proper divisors (1).

243113300513 is an equidigital number, since it uses as much as digits as its factorization.

243113300513 is an odious number, because the sum of its binary digits is odd.

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

Adding to 243113300513 its reverse (315003311342), we get a palindrome (558116611855).

The spelling of 243113300513 in words is "two hundred forty-three billion, one hundred thirteen million, three hundred thousand, five hundred thirteen".