117117971 has 2 divisors, whose sum is σ = 117117972. Its totient is φ = 117117970.

The previous prime is 117117929. The next prime is 117117977. The reversal of 117117971 is 179711711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117117971 - 2¹⁴ = 117101587 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117117977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58558985 + 58558986.

It is an arithmetic number, because the mean of its divisors is an integer number (58558986).

Almost surely, 2^117117971 is an apocalyptic number.

117117971 is a deficient number, since it is larger than the sum of its proper divisors (1).

117117971 is an equidigital number, since it uses as much as digits as its factorization.

117117971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3087, while the sum is 35.

The square root of 117117971 is about 10822.1056638715. The cubic root of 117117971 is about 489.2616549034.

The spelling of 117117971 in words is "one hundred seventeen million, one hundred seventeen thousand, nine hundred seventy-one".