213443311013 has 2 divisors, whose sum is σ = 213443311014. Its totient is φ = 213443311012.

The previous prime is 213443310991. The next prime is 213443311019. The reversal of 213443311013 is 310113344312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166690925284 + 46752385729 = 408278^2 + 216223^2 .

It is a cyclic number.

It is not a de Polignac number, because 213443311013 - 2²⁰ = 213442262437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213443311019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106721655506 + 106721655507.

It is an arithmetic number, because the mean of its divisors is an integer number (106721655507).

Almost surely, 2^213443311013 is an apocalyptic number.

It is an amenable number.

213443311013 is a deficient number, since it is larger than the sum of its proper divisors (1).

213443311013 is an equidigital number, since it uses as much as digits as its factorization.

213443311013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 213443311013 its reverse (310113344312), we get a palindrome (523556655325).

The spelling of 213443311013 in words is "two hundred thirteen billion, four hundred forty-three million, three hundred eleven thousand, thirteen".