117302391 has 16 divisors (see below), whose sum is σ = 175576800. Its totient is φ = 77393664.

The previous prime is 117302389. The next prime is 117302401. The reversal of 117302391 is 193203711.

It is not a de Polignac number, because 117302391 - 2¹ = 117302389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117302351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19776 + ... + 25013.

It is an arithmetic number, because the mean of its divisors is an integer number (10973550).

Almost surely, 2^117302391 is an apocalyptic number.

117302391 is a deficient number, since it is larger than the sum of its proper divisors (58274409).

117302391 is an equidigital number, since it uses as much as digits as its factorization.

117302391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44895 (or 44889 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 117302391 is about 10830.6228352759. The cubic root of 117302391 is about 489.5183257767.

The spelling of 117302391 in words is "one hundred seventeen million, three hundred two thousand, three hundred ninety-one".