It is a Curzon number.
It is a nialpdrome in base 14.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 31434.
It is an unprimeable number.
231434 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 31434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35136).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31434 is a wasteful number, since it uses less digits than its factorization.
31434 is an odious number, because the sum of its binary digits is odd.
The square root of 31434 is about 177.2963620608. The cubic root of 31434 is about 31.5597254366.
Adding to 31434 its reverse (43413), we get a palindrome (74847).
The spelling of 31434 in words is "thirty-one thousand, four hundred thirty-four".