117217313 has 4 divisors (see below), whose sum is σ = 117244740. Its totient is φ = 117189888.

The previous prime is 117217283. The next prime is 117217343. The reversal of 117217313 is 313712711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 313712711 = 13 ⋅24131747.

It is an interprime number because it is at equal distance from previous prime (117217283) and next prime (117217343).

It can be written as a sum of positive squares in 2 ways, for example, as 105431824 + 11785489 = 10268^2 + 3433^2 .

It is a cyclic number.

It is not a de Polignac number, because 117217313 - 2²⁰ = 116168737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117217343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5768 + ... + 16361.

It is an arithmetic number, because the mean of its divisors is an integer number (29311185).

Almost surely, 2^117217313 is an apocalyptic number.

It is an amenable number.

117217313 is a deficient number, since it is larger than the sum of its proper divisors (27427).

117217313 is an equidigital number, since it uses as much as digits as its factorization.

117217313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27426.

The product of its digits is 882, while the sum is 26.

The square root of 117217313 is about 10826.6944632238. The cubic root of 117217313 is about 489.3999499205.

The spelling of 117217313 in words is "one hundred seventeen million, two hundred seventeen thousand, three hundred thirteen".