131666051 has 8 divisors (see below), whose sum is σ = 143733744. Its totient is φ = 119614720.

The previous prime is 131666023. The next prime is 131666057. The reversal of 131666051 is 150666131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131666051 - 2⁶ = 131665987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131666057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17915 + ... + 24171.

It is an arithmetic number, because the mean of its divisors is an integer number (17966718).

Almost surely, 2^131666051 is an apocalyptic number.

131666051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131666051 is a deficient number, since it is larger than the sum of its proper divisors (12067693).

131666051 is a wasteful number, since it uses less digits than its factorization.

131666051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 131666051 is about 11474.5828246608. The cubic root of 131666051 is about 508.7345932426.

The spelling of 131666051 in words is "one hundred thirty-one million, six hundred sixty-six thousand, fifty-one".