117917143 has 2 divisors, whose sum is σ = 117917144. Its totient is φ = 117917142.

The previous prime is 117917141. The next prime is 117917171. The reversal of 117917143 is 341719711.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (341719711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117917143 - 2¹ = 117917141 is a prime.

It is a super-2 number, since 2×117917143² = 27808905226564898, which contains 22 as substring.

Together with 117917141, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 117917099 and 117917108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117917141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58958571 + 58958572.

It is an arithmetic number, because the mean of its divisors is an integer number (58958572).

Almost surely, 2^117917143 is an apocalyptic number.

117917143 is a deficient number, since it is larger than the sum of its proper divisors (1).

117917143 is an equidigital number, since it uses as much as digits as its factorization.

117917143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 34.

The square root of 117917143 is about 10858.9660189173. The cubic root of 117917143 is about 490.3719832602.

The spelling of 117917143 in words is "one hundred seventeen million, nine hundred seventeen thousand, one hundred forty-three".