117381 has 8 divisors (see below), whose sum is σ = 170784. Its totient is φ = 71120.

The previous prime is 117373. The next prime is 117389. The reversal of 117381 is 183711.

It is an interprime number because it is at equal distance from previous prime (117373) and next prime (117389).

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 117381 - 2³ = 117373 is a prime.

It is a super-2 number, since 2×117381² = 27556598322, which contains 22 as substring.

117381 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 117381.

It is not an unprimeable number, because it can be changed into a prime (117389) 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, 1746 + ... + 1811.

It is an arithmetic number, because the mean of its divisors is an integer number (21348).

2¹¹⁷³⁸¹ is an apocalyptic number.

117381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

117381 is a deficient number, since it is larger than the sum of its proper divisors (53403).

117381 is a wasteful number, since it uses less digits than its factorization.

117381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571.

The product of its digits is 168, while the sum is 21.

The square root of 117381 is about 342.6091067091. The cubic root of 117381 is about 48.9627649929.

The spelling of 117381 in words is "one hundred seventeen thousand, three hundred eighty-one".