117047881 has 4 divisors (see below), whose sum is σ = 117480064. Its totient is φ = 116615700.

The previous prime is 117047867. The next prime is 117047893. The reversal of 117047881 is 188740711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 188740711 = 7841 ⋅24071.

It is a cyclic number.

It is not a de Polignac number, because 117047881 - 2⁹ = 117047369 is a prime.

It is a super-2 number, since 2×117047881² = 27400412893180322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117047881.

It is not an unprimeable number, because it can be changed into a prime (117047081) 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, 215685 + ... + 216226.

It is an arithmetic number, because the mean of its divisors is an integer number (29370016).

Almost surely, 2^117047881 is an apocalyptic number.

It is an amenable number.

117047881 is a deficient number, since it is larger than the sum of its proper divisors (432183).

117047881 is an equidigital number, since it uses as much as digits as its factorization.

117047881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432182.

The product of its (nonzero) digits is 12544, while the sum is 37.

The square root of 117047881 is about 10818.8669000039. The cubic root of 117047881 is about 489.1640348365.

The spelling of 117047881 in words is "one hundred seventeen million, forty-seven thousand, eight hundred eighty-one".