It is a happy number.
31992 is an undulating number in base 6.
It is a nialpdrome in base 14.
It is a zygodrome in base 2.
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 31992.
231992 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 31992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42240).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31992 is a wasteful number, since it uses less digits than its factorization.
31992 is an evil number, because the sum of its binary digits is even.
The square root of 31992 is about 178.8630761225. The cubic root of 31992 is about 31.7453751504.
The spelling of 31992 in words is "thirty-one thousand, nine hundred ninety-two".