117127931 has 2 divisors, whose sum is σ = 117127932. Its totient is φ = 117127930.

The previous prime is 117127877. The next prime is 117127949. The reversal of 117127931 is 139721711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117127931 - 2⁶ = 117127867 is a prime.

It is a super-2 number, since 2×117127931² = 27437904440681522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117127981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58563965 + 58563966.

It is an arithmetic number, because the mean of its divisors is an integer number (58563966).

Almost surely, 2^117127931 is an apocalyptic number.

117127931 is a deficient number, since it is larger than the sum of its proper divisors (1).

117127931 is an equidigital number, since it uses as much as digits as its factorization.

117127931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646, while the sum is 32.

The square root of 117127931 is about 10822.5658233157. The cubic root of 117127931 is about 489.2755238480.

The spelling of 117127931 in words is "one hundred seventeen million, one hundred twenty-seven thousand, nine hundred thirty-one".