Adding to 31386 its reverse (68313), we get a palindrome (99699).
It is a sphenic number, since it is the product of 3 distinct primes.
31386 is an admirable number.
It is a Curzon number.
231386 is an apocalyptic number.
31386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31386 is a wasteful number, since it uses less digits than its factorization.
31386 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5236.
The square root of 31386 is about 177.1609437771. The cubic root of 31386 is about 31.5436532584.
The spelling of 31386 in words is "thirty-one thousand, three hundred eighty-six".