It is a happy number.
The square root of 131439804678400 is 11464720.
It is a Duffinian number.
It is an unprimeable number.
Almost surely, 2131439804678400 is an apocalyptic number.
131439804678400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
131439804678400 is the 11464720-th square number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 131439804678400
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131439804678400 is an frugal number, since it uses more digits than its factorization.
131439804678400 is an odious number, because the sum of its binary digits is odd.
The spelling of 131439804678400 in words is "one hundred thirty-one trillion, four hundred thirty-nine billion, eight hundred four million, six hundred seventy-eight thousand, four hundred".