It is a happy number.
It is a tau number, because it is divible by the number of its divisors (288).
It is a congruent number.
It is an unprimeable number.
Almost surely, 2531139680 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 531139680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (990662400).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
531139680 is a wasteful number, since it uses less digits than its factorization.
531139680 is an odious number, because the sum of its binary digits is odd.
The square root of 531139680 is about 23046.4678421662. The cubic root of 531139680 is about 809.8468846385.
The spelling of 531139680 in words is "five hundred thirty-one million, one hundred thirty-nine thousand, six hundred eighty".