118217713 has 4 divisors (see below), whose sum is σ = 118254708. Its totient is φ = 118180720.

The previous prime is 118217689. The next prime is 118217747. The reversal of 118217713 is 317712811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79067664 + 39150049 = 8892^2 + 6257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118217713 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118217513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13198 + ... + 20263.

It is an arithmetic number, because the mean of its divisors is an integer number (29563677).

Almost surely, 2^118217713 is an apocalyptic number.

It is an amenable number.

118217713 is a deficient number, since it is larger than the sum of its proper divisors (36995).

118217713 is an equidigital number, since it uses as much as digits as its factorization.

118217713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36994.

The product of its digits is 2352, while the sum is 31.

The square root of 118217713 is about 10872.7969262743. The cubic root of 118217713 is about 490.7882813696.

The spelling of 118217713 in words is "one hundred eighteen million, two hundred seventeen thousand, seven hundred thirteen".