117317971 has 4 divisors (see below), whose sum is σ = 117355000. Its totient is φ = 117280944.

The previous prime is 117317957. The next prime is 117317983. The reversal of 117317971 is 179713711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 179713711 = 349 ⋅514939.

It is a cyclic number.

It is not a de Polignac number, because 117317971 - 2¹³ = 117309779 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117317971.

It is not an unprimeable number, because it can be changed into a prime (117317071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13266 + ... + 20263.

It is an arithmetic number, because the mean of its divisors is an integer number (29338750).

Almost surely, 2^117317971 is an apocalyptic number.

117317971 is a deficient number, since it is larger than the sum of its proper divisors (37029).

117317971 is an equidigital number, since it uses as much as digits as its factorization.

117317971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37028.

The product of its digits is 9261, while the sum is 37.

The square root of 117317971 is about 10831.3420682757. The cubic root of 117317971 is about 489.5399972812.

The spelling of 117317971 in words is "one hundred seventeen million, three hundred seventeen thousand, nine hundred seventy-one".