117137191 has 12 divisors (see below), whose sum is σ = 124863040. Its totient is φ = 109866240.

The previous prime is 117137173. The next prime is 117137197. The reversal of 117137191 is 191731711.

It is a happy number.

It is not a de Polignac number, because 117137191 - 2⁵ = 117137159 is a prime.

It is a super-2 number, since 2×117137191² = 27442243030740962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117137197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117706 + ... + 118696.

Almost surely, 2^117137191 is an apocalyptic number.

117137191 is a deficient number, since it is larger than the sum of its proper divisors (7725849).

117137191 is an equidigital number, since it uses as much as digits as its factorization.

117137191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434 (or 1417 counting only the distinct ones).

The product of its digits is 1323, while the sum is 31.

The square root of 117137191 is about 10822.9936246863. The cubic root of 117137191 is about 489.2884173623.

The spelling of 117137191 in words is "one hundred seventeen million, one hundred thirty-seven thousand, one hundred ninety-one".