217315713 has 8 divisors (see below), whose sum is σ = 290824576. Its totient is φ = 144342000.

The previous prime is 217315699. The next prime is 217315717. The reversal of 217315713 is 317513712.

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

It is not a de Polignac number, because 217315713 - 2⁴ = 217315697 is a prime.

It is a super-2 number, since 2×217315713² = 94452238233396738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (217315717) 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, 132838 + ... + 134463.

It is an arithmetic number, because the mean of its divisors is an integer number (36353072).

Almost surely, 2^217315713 is an apocalyptic number.

It is an amenable number.

217315713 is a deficient number, since it is larger than the sum of its proper divisors (73508863).

217315713 is a wasteful number, since it uses less digits than its factorization.

217315713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267575.

The product of its digits is 4410, while the sum is 30.

The square root of 217315713 is about 14741.6319652880. The cubic root of 217315713 is about 601.2157875482.

The spelling of 217315713 in words is "two hundred seventeen million, three hundred fifteen thousand, seven hundred thirteen".