17117231 has 2 divisors, whose sum is σ = 17117232. Its totient is φ = 17117230.

The previous prime is 17117201. The next prime is 17117237. The reversal of 17117231 is 13271171.

It is a strong prime.

It is an emirp because it is prime and its reverse (13271171) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17117231 is a prime.

It is a super-2 number, since 2×17117231² = 585999194214722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 17117197 and 17117206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17117237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8558615 + 8558616.

It is an arithmetic number, because the mean of its divisors is an integer number (8558616).

Almost surely, 2^17117231 is an apocalyptic number.

17117231 is a deficient number, since it is larger than the sum of its proper divisors (1).

17117231 is an equidigital number, since it uses as much as digits as its factorization.

17117231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294, while the sum is 23.

The square root of 17117231 is about 4137.2975479170. The cubic root of 17117231 is about 257.7178525253.

The spelling of 17117231 in words is "seventeen million, one hundred seventeen thousand, two hundred thirty-one".