117217312 has 48 divisors (see below), whose sum is σ = 250078752. Its totient is φ = 53867520.

The previous prime is 117217283. The next prime is 117217343. The reversal of 117217312 is 213712711.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20887 + ... + 25897.

It is an arithmetic number, because the mean of its divisors is an integer number (5209974).

Almost surely, 2^117217312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117217312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125039376).

117217312 is an abundant number, since it is smaller than the sum of its proper divisors (132861440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117217312 is a wasteful number, since it uses less digits than its factorization.

117217312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5081 (or 5073 counting only the distinct ones).

The product of its digits is 588, while the sum is 25.

The square root of 117217312 is about 10826.6944170416. The cubic root of 117217312 is about 489.3999485287.

The spelling of 117217312 in words is "one hundred seventeen million, two hundred seventeen thousand, three hundred twelve".