131871166 has 16 divisors (see below), whose sum is σ = 226679904. Its totient is φ = 56362464.

The previous prime is 131871161. The next prime is 131871199. The reversal of 131871166 is 661178131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131871161) by changing a digit.

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, 7405 + ... + 17848.

It is an arithmetic number, because the mean of its divisors is an integer number (14167494).

Almost surely, 2^131871166 is an apocalyptic number.

131871166 is a deficient number, since it is larger than the sum of its proper divisors (94808738).

131871166 is a wasteful number, since it uses less digits than its factorization.

131871166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25635.

The product of its digits is 6048, while the sum is 34.

The square root of 131871166 is about 11483.5171441506. The cubic root of 131871166 is about 508.9986323417.

The spelling of 131871166 in words is "one hundred thirty-one million, eight hundred seventy-one thousand, one hundred sixty-six".