131695985 has 4 divisors (see below), whose sum is σ = 158035188. Its totient is φ = 105356784.

The previous prime is 131695979. The next prime is 131695997. The reversal of 131695985 is 589596131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 589596131 = 6079 ⋅96989.

It can be written as a sum of positive squares in 2 ways, for example, as 78872161 + 52823824 = 8881^2 + 7268^2 .

It is a cyclic number.

It is not a de Polignac number, because 131695985 - 2¹⁰ = 131694961 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13169594 + ... + 13169603.

It is an arithmetic number, because the mean of its divisors is an integer number (39508797).

Almost surely, 2^131695985 is an apocalyptic number.

It is an amenable number.

131695985 is a deficient number, since it is larger than the sum of its proper divisors (26339203).

131695985 is an equidigital number, since it uses as much as digits as its factorization.

131695985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26339202.

The product of its digits is 291600, while the sum is 47.

The square root of 131695985 is about 11475.8871116790. The cubic root of 131695985 is about 508.7731435682.

The spelling of 131695985 in words is "one hundred thirty-one million, six hundred ninety-five thousand, nine hundred eighty-five".