131889866 has 16 divisors (see below), whose sum is σ = 211474368. Its totient is φ = 61538400.

The previous prime is 131889853. The next prime is 131889913. The reversal of 131889866 is 668988131.

It is a happy number.

131889866 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33080 + ... + 36851.

It is an arithmetic number, because the mean of its divisors is an integer number (13217148).

Almost surely, 2^131889866 is an apocalyptic number.

131889866 is a deficient number, since it is larger than the sum of its proper divisors (79584502).

131889866 is a wasteful number, since it uses less digits than its factorization.

131889866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69997.

The product of its digits is 497664, while the sum is 50.

The square root of 131889866 is about 11484.3313257673. The cubic root of 131889866 is about 509.0226907335.

The spelling of 131889866 in words is "one hundred thirty-one million, eight hundred eighty-nine thousand, eight hundred sixty-six".