117320427 has 16 divisors (see below), whose sum is σ = 198638080. Its totient is φ = 67040136.

The previous prime is 117320407. The next prime is 117320449. The reversal of 117320427 is 724023711.

It is a happy number.

It is not a de Polignac number, because 117320427 - 2⁶ = 117320363 is a prime.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117320427.

It is not an unprimeable number, because it can be changed into a prime (117320407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310183 + ... + 310560.

It is an arithmetic number, because the mean of its divisors is an integer number (12414880).

Almost surely, 2^117320427 is an apocalyptic number.

117320427 is a deficient number, since it is larger than the sum of its proper divisors (81317653).

117320427 is an equidigital number, since it uses as much as digits as its factorization.

117320427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620759 (or 620753 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 117320427 is about 10831.4554423678. The cubic root of 117320427 is about 489.5434133587.

The spelling of 117320427 in words is "one hundred seventeen million, three hundred twenty thousand, four hundred twenty-seven".