217713013 has 8 divisors (see below), whose sum is σ = 249484928. Its totient is φ = 186108624.

The previous prime is 217712983. The next prime is 217713047. The reversal of 217713013 is 310317712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 217713013 - 2⁵ = 217712981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (217713053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39081 + ... + 44302.

It is an arithmetic number, because the mean of its divisors is an integer number (31185616).

Almost surely, 2^217713013 is an apocalyptic number.

It is an amenable number.

217713013 is a deficient number, since it is larger than the sum of its proper divisors (31771915).

217713013 is an equidigital number, since it uses as much as digits as its factorization.

217713013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83763.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 217713013 is about 14755.1012534649. The cubic root of 217713013 is about 601.5819485471.

The spelling of 217713013 in words is "two hundred seventeen million, seven hundred thirteen thousand, thirteen".