116381 has 2 divisors, whose sum is σ = 116382.
Its totient is φ = 116380.
The previous prime is 116371. The next prime is 116387. The reversal of 116381 is 183611.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 116281 + 100 = 341^2 + 10^2
It is an emirp because it is prime and its reverse (183611) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-116381 is a prime.
It is a super-2 number, since 2×1163812 = 27089074322, which contains 22 as substring.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (116387) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58190 + 58191.
It is an arithmetic number, because the mean of its divisors is an integer number (58191).
2116381 is an apocalyptic number.
It is an amenable number.
116381 is a deficient number, since it is larger than the sum of its proper divisors (1).
116381 is an equidigital number, since it uses as much as digits as its factorization.
116381 is an evil number, because the sum of its binary digits is even.
The product of its digits is 144, while the sum is 20.
The square root of 116381 is about 341.1465960551.
The cubic root of 116381 is about 48.8233259892.
Adding to 116381 its reverse (183611), we get a palindrome (299992).
The spelling of 116381 in words is "one hundred sixteen thousand, three hundred eighty-one".