It is a happy number.
It is a semiprime because it is the product of two primes.
It is an Ulam number.
It is an unprimeable number.
2131986 is an apocalyptic number.
131986 is an equidigital number, since it uses as much as digits as its factorization.
131986 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 65995.
The square root of 131986 is about 363.2987751149. The cubic root of 131986 is about 50.9146335570.
The spelling of 131986 in words is "one hundred thirty-one thousand, nine hundred eighty-six".