131666269 has 8 divisors (see below), whose sum is σ = 155330048. Its totient is φ = 109216080.

The previous prime is 131666261. The next prime is 131666273. The reversal of 131666269 is 962666131.

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 131666269 - 2³ = 131666261 is a prime.

It is a super-2 number, since 2×131666269² = 34672012784760722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131666261) 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, 303162 + ... + 303595.

It is an arithmetic number, because the mean of its divisors is an integer number (19416256).

Almost surely, 2^131666269 is an apocalyptic number.

It is an amenable number.

131666269 is a deficient number, since it is larger than the sum of its proper divisors (23663779).

131666269 is an equidigital number, since it uses as much as digits as its factorization.

131666269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606795.

The product of its digits is 69984, while the sum is 40.

The square root of 131666269 is about 11474.5923239129. The cubic root of 131666269 is about 508.7348740138.

The spelling of 131666269 in words is "one hundred thirty-one million, six hundred sixty-six thousand, two hundred sixty-nine".