131666630 has 16 divisors (see below), whose sum is σ = 239348304. Its totient is φ = 52144800.

The previous prime is 131666627. The next prime is 131666653. The reversal of 131666630 is 36666131.

131666630 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×131666630² = 34672202911113800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 64172 + ... + 66191.

It is an arithmetic number, because the mean of its divisors is an integer number (14959269).

Almost surely, 2^131666630 is an apocalyptic number.

131666630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131666630 is a deficient number, since it is larger than the sum of its proper divisors (107681674).

131666630 is a wasteful number, since it uses less digits than its factorization.

131666630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130471.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 131666630 is about 11474.6080543084. The cubic root of 131666630 is about 508.7353389598.

The spelling of 131666630 in words is "one hundred thirty-one million, six hundred sixty-six thousand, six hundred thirty".