213243230393 has 2 divisors, whose sum is σ = 213243230394. Its totient is φ = 213243230392.

The previous prime is 213243230383. The next prime is 213243230437. The reversal of 213243230393 is 393032342312.

213243230393 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., 197040995449 + 16202234944 = 443893^2 + 127288^2 .

It is a cyclic number.

It is not a de Polignac number, because 213243230393 - 2¹⁶ = 213243164857 is a prime.

It is not a weakly prime, because it can be changed into another prime (213243230303) 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, 106621615196 + 106621615197.

It is an arithmetic number, because the mean of its divisors is an integer number (106621615197).

Almost surely, 2^213243230393 is an apocalyptic number.

It is an amenable number.

213243230393 is a deficient number, since it is larger than the sum of its proper divisors (1).

213243230393 is an equidigital number, since it uses as much as digits as its factorization.

213243230393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 35.

The spelling of 213243230393 in words is "two hundred thirteen billion, two hundred forty-three million, two hundred thirty thousand, three hundred ninety-three".