117100187 has 4 divisors (see below), whose sum is σ = 117454296. Its totient is φ = 116746080.

The previous prime is 117100183. The next prime is 117100253. The reversal of 117100187 is 781001711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117100187 - 2² = 117100183 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117100183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176558 + ... + 177219.

It is an arithmetic number, because the mean of its divisors is an integer number (29363574).

Almost surely, 2^117100187 is an apocalyptic number.

117100187 is a deficient number, since it is larger than the sum of its proper divisors (354109).

117100187 is an equidigital number, since it uses as much as digits as its factorization.

117100187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354108.

The product of its (nonzero) digits is 392, while the sum is 26.

The square root of 117100187 is about 10821.2839811180. The cubic root of 117100187 is about 489.2368893624.

Adding to 117100187 its reverse (781001711), we get a palindrome (898101898).

The spelling of 117100187 in words is "one hundred seventeen million, one hundred thousand, one hundred eighty-seven".