131666313 has 12 divisors (see below), whose sum is σ = 180433680. Its totient is φ = 85402512.

The previous prime is 131666299. The next prime is 131666399. The reversal of 131666313 is 313666131.

It is not a de Polignac number, because 131666313 - 2⁸ = 131666057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131666813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11923 + ... + 20136.

It is an arithmetic number, because the mean of its divisors is an integer number (15036140).

Almost surely, 2^131666313 is an apocalyptic number.

It is an amenable number.

131666313 is a deficient number, since it is larger than the sum of its proper divisors (48767367).

131666313 is an equidigital number, since it uses as much as digits as its factorization.

131666313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32136 (or 32099 counting only the distinct ones).

The product of its digits is 5832, while the sum is 30.

The square root of 131666313 is about 11474.5942411921. The cubic root of 131666313 is about 508.7349306831.

The spelling of 131666313 in words is "one hundred thirty-one million, six hundred sixty-six thousand, three hundred thirteen".