217101713 has 6 divisors (see below), whose sum is σ = 230623926. Its totient is φ = 204330752.

The previous prime is 217101673. The next prime is 217101719. The reversal of 217101713 is 317101712.

217101713 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 47789569 + 169312144 = 6913^2 + 13012^2 .

It is not a de Polignac number, because 217101713 - 2¹⁸ = 216839569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217101719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 375320 + ... + 375897.

It is an arithmetic number, because the mean of its divisors is an integer number (38437321).

Almost surely, 2^217101713 is an apocalyptic number.

It is an amenable number.

217101713 is a deficient number, since it is larger than the sum of its proper divisors (13522213).

217101713 is an equidigital number, since it uses as much as digits as its factorization.

217101713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751251 (or 751234 counting only the distinct ones).

The product of its (nonzero) digits is 294, while the sum is 23.

The square root of 217101713 is about 14734.3718223751. The cubic root of 217101713 is about 601.0183751717.

Subtracting 217101713 from its reverse (317101712), we obtain a palindrome (99999999).

The spelling of 217101713 in words is "two hundred seventeen million, one hundred one thousand, seven hundred thirteen".