117666131 has 8 divisors (see below), whose sum is σ = 128931264. Its totient is φ = 106495720.

The previous prime is 117666127. The next prime is 117666161. The reversal of 117666131 is 131666711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117666131 - 2² = 117666127 is a prime.

It is a super-2 number, since 2×117666131² = 27690636769018322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117666121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21065 + ... + 26058.

It is an arithmetic number, because the mean of its divisors is an integer number (16116408).

Almost surely, 2^117666131 is an apocalyptic number.

117666131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117666131 is a deficient number, since it is larger than the sum of its proper divisors (11265133).

117666131 is a wasteful number, since it uses less digits than its factorization.

117666131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47361.

The product of its digits is 4536, while the sum is 32.

The square root of 117666131 is about 10847.4020391981. The cubic root of 117666131 is about 490.0237819916.

The spelling of 117666131 in words is "one hundred seventeen million, six hundred sixty-six thousand, one hundred thirty-one".