Subtracting from 131424 its product of digits (96), we obtain a triangular number (131328 = T512).
Multipling 131424 by its product of digits (96), we get a square (12616704 = 35522).
131424 divided by its product of digits (96) gives a square (1369 = 372).
Adding to 131424 its reverse (424131), we get a palindrome (555555).
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 131424.
It is an unprimeable number.
131424 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
2131424 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 131424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177282).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131424 is an equidigital number, since it uses as much as digits as its factorization.
131424 is an evil number, because the sum of its binary digits is even.
The square root of 131424 is about 362.5244819319. The cubic root of 131424 is about 50.8422654435.
The spelling of 131424 in words is "one hundred thirty-one thousand, four hundred twenty-four".