131195666 has 16 divisors (see below), whose sum is σ = 230138304. Its totient is φ = 54918864.

The previous prime is 131195651. The next prime is 131195671. The reversal of 131195666 is 666591131.

It is a happy number.

131195666 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108365 + ... + 109568.

It is an arithmetic number, because the mean of its divisors is an integer number (14383644).

Almost surely, 2^131195666 is an apocalyptic number.

131195666 is a deficient number, since it is larger than the sum of its proper divisors (98942638).

131195666 is a wasteful number, since it uses less digits than its factorization.

131195666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217985.

The product of its digits is 29160, while the sum is 38.

The square root of 131195666 is about 11454.0676617523. The cubic root of 131195666 is about 508.1280418970.

The spelling of 131195666 in words is "one hundred thirty-one million, one hundred ninety-five thousand, six hundred sixty-six".