117281871 has 32 divisors (see below), whose sum is σ = 199180800. Its totient is φ = 66813120.

The previous prime is 117281869. The next prime is 117281881. The reversal of 117281871 is 178182711.

It is not a de Polignac number, because 117281871 - 2¹ = 117281869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117281881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78451 + ... + 79931.

It is an arithmetic number, because the mean of its divisors is an integer number (6224400).

Almost surely, 2^117281871 is an apocalyptic number.

117281871 is a deficient number, since it is larger than the sum of its proper divisors (81898929).

117281871 is a wasteful number, since it uses less digits than its factorization.

117281871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916 (or 1910 counting only the distinct ones).

The product of its digits is 6272, while the sum is 36.

The square root of 117281871 is about 10829.6754799024. The cubic root of 117281871 is about 489.4897798913.

It can be divided in two parts, 1172818 and 71, that added together give a square (1172889 = 1083²).

The spelling of 117281871 in words is "one hundred seventeen million, two hundred eighty-one thousand, eight hundred seventy-one".