213543240012017 has 2 divisors, whose sum is σ = 213543240012018. Its totient is φ = 213543240012016.

The previous prime is 213543240011971. The next prime is 213543240012019. The reversal of 213543240012017 is 710210042345312.

It is a happy number.

213543240012017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111935045764096 + 101608194247921 = 10579936^2 + 10080089^2 .

It is a cyclic number.

It is not a de Polignac number, because 213543240012017 - 2²⁰ = 213543238963441 is a prime.

Together with 213543240012019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (213543240012019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106771620006008 + 106771620006009.

It is an arithmetic number, because the mean of its divisors is an integer number (106771620006009).

Almost surely, 2^{213543240012017} is an apocalyptic number.

It is an amenable number.

213543240012017 is a deficient number, since it is larger than the sum of its proper divisors (1).

213543240012017 is an equidigital number, since it uses as much as digits as its factorization.

213543240012017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

Adding to 213543240012017 its reverse (710210042345312), we get a palindrome (923753282357329).

The spelling of 213543240012017 in words is "two hundred thirteen trillion, five hundred forty-three billion, two hundred forty million, twelve thousand, seventeen".