131585871 has 8 divisors (see below), whose sum is σ = 178421760. Its totient is φ = 86236952.

The previous prime is 131585869. The next prime is 131585893. The reversal of 131585871 is 178585131.

It is a happy number.

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 131585871 - 2¹ = 131585869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131585071) 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, 371535 + ... + 371888.

It is an arithmetic number, because the mean of its divisors is an integer number (22302720).

Almost surely, 2^131585871 is an apocalyptic number.

131585871 is a deficient number, since it is larger than the sum of its proper divisors (46835889).

131585871 is an equidigital number, since it uses as much as digits as its factorization.

131585871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743485.

The product of its digits is 33600, while the sum is 39.

The square root of 131585871 is about 11471.0884836619. The cubic root of 131585871 is about 508.6313051079.

The spelling of 131585871 in words is "one hundred thirty-one million, five hundred eighty-five thousand, eight hundred seventy-one".