117911 has 2 divisors, whose sum is σ = 117912. Its totient is φ = 117910.

The previous prime is 117899. The next prime is 117917. The reversal of 117911 is 119711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117911 - 2¹⁴ = 101527 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58955 + 58956.

It is an arithmetic number, because the mean of its divisors is an integer number (58956).

2¹¹⁷⁹¹¹ is an apocalyptic number.

117911 is a deficient number, since it is larger than the sum of its proper divisors (1).

117911 is an equidigital number, since it uses as much as digits as its factorization.

117911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63, while the sum is 20.

The square root of 117911 is about 343.3817118019. The cubic root of 117911 is about 49.0363467655.

The spelling of 117911 in words is "one hundred seventeen thousand, nine hundred eleven".