213012331243 has 2 divisors, whose sum is σ = 213012331244. Its totient is φ = 213012331242.

The previous prime is 213012331223. The next prime is 213012331297. The reversal of 213012331243 is 342133210312.

213012331243 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 is a cyclic number.

It is not a de Polignac number, because 213012331243 - 2⁵ = 213012331211 is a prime.

It is not a weakly prime, because it can be changed into another prime (213012331223) 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, 106506165621 + 106506165622.

It is an arithmetic number, because the mean of its divisors is an integer number (106506165622).

Almost surely, 2^213012331243 is an apocalyptic number.

213012331243 is a deficient number, since it is larger than the sum of its proper divisors (1).

213012331243 is an equidigital number, since it uses as much as digits as its factorization.

213012331243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 213012331243 its reverse (342133210312), we get a palindrome (555145541555).

The spelling of 213012331243 in words is "two hundred thirteen billion, twelve million, three hundred thirty-one thousand, two hundred forty-three".