131166404 has 6 divisors (see below), whose sum is σ = 229541214. Its totient is φ = 65583200.

The previous prime is 131166379. The next prime is 131166461. The reversal of 131166404 is 404661131.

131166404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 126112900 + 5053504 = 11230^2 + 2248^2 .

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 as a sum of consecutive naturals, namely, 16395797 + ... + 16395804.

It is an arithmetic number, because the mean of its divisors is an integer number (38256869).

Almost surely, 2^131166404 is an apocalyptic number.

It is an amenable number.

131166404 is a deficient number, since it is larger than the sum of its proper divisors (98374810).

131166404 is a wasteful number, since it uses less digits than its factorization.

131166404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32791605 (or 32791603 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 131166404 is about 11452.7902277131. The cubic root of 131166404 is about 508.0902613087.

The spelling of 131166404 in words is "one hundred thirty-one million, one hundred sixty-six thousand, four hundred four".