2117331517 has 8 divisors (see below), whose sum is σ = 2420762112. Its totient is φ = 1814139600.

The previous prime is 2117331509. The next prime is 2117331547. The reversal of 2117331517 is 7151337112.

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

It is not a de Polignac number, because 2117331517 - 2³ = 2117331509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117331547) 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, 40234 + ... + 76507.

It is an arithmetic number, because the mean of its divisors is an integer number (302595264).

Almost surely, 2^2117331517 is an apocalyptic number.

It is an amenable number.

2117331517 is a deficient number, since it is larger than the sum of its proper divisors (303430595).

2117331517 is a wasteful number, since it uses less digits than its factorization.

2117331517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119339.

The product of its digits is 4410, while the sum is 31.

The square root of 2117331517 is about 46014.4707347591. The cubic root of 2117331517 is about 1284.0924349059.

Adding to 2117331517 its reverse (7151337112), we get a palindrome (9268668629).

The spelling of 2117331517 in words is "two billion, one hundred seventeen million, three hundred thirty-one thousand, five hundred seventeen".