117312388 has 12 divisors (see below), whose sum is σ = 205465680. Its totient is φ = 58607912.

The previous prime is 117312383. The next prime is 117312389. The reversal of 117312388 is 883213711.

It is not an unprimeable number, because it can be changed into a prime (117312383) 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, 6298 + ... + 16561.

It is an arithmetic number, because the mean of its divisors is an integer number (17122140).

Almost surely, 2^117312388 is an apocalyptic number.

It is an amenable number.

117312388 is a deficient number, since it is larger than the sum of its proper divisors (88153292).

117312388 is a wasteful number, since it uses less digits than its factorization.

117312388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24146 (or 24144 counting only the distinct ones).

The product of its digits is 8064, while the sum is 34.

The square root of 117312388 is about 10831.0843409143. The cubic root of 117312388 is about 489.5322316475.

The spelling of 117312388 in words is "one hundred seventeen million, three hundred twelve thousand, three hundred eighty-eight".