131481686 has 16 divisors (see below), whose sum is σ = 227467680. Its totient is φ = 55831680.

The previous prime is 131481673. The next prime is 131481709. The reversal of 131481686 is 686184131.

131481686 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41555 + ... + 44606.

It is an arithmetic number, because the mean of its divisors is an integer number (14216730).

Almost surely, 2^131481686 is an apocalyptic number.

131481686 is a deficient number, since it is larger than the sum of its proper divisors (95985994).

131481686 is a wasteful number, since it uses less digits than its factorization.

131481686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86279.

The product of its digits is 27648, while the sum is 38.

The square root of 131481686 is about 11466.5463850281. The cubic root of 131481686 is about 508.4970309543.

The spelling of 131481686 in words is "one hundred thirty-one million, four hundred eighty-one thousand, six hundred eighty-six".