117513209 has 8 divisors (see below), whose sum is σ = 128535552. Its totient is φ = 106547440.

The previous prime is 117513199. The next prime is 117513223. The reversal of 117513209 is 902315711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 117513209 - 2¹² = 117509113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117513239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9734 + ... + 18159.

It is an arithmetic number, because the mean of its divisors is an integer number (16066944).

Almost surely, 2^117513209 is an apocalyptic number.

It is an amenable number.

117513209 is a deficient number, since it is larger than the sum of its proper divisors (11022343).

117513209 is a wasteful number, since it uses less digits than its factorization.

117513209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28287.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 117513209 is about 10840.3509629532. The cubic root of 117513209 is about 489.8114073621.

The spelling of 117513209 in words is "one hundred seventeen million, five hundred thirteen thousand, two hundred nine".