131786 has 8 divisors (see below), whose sum is σ = 199584. Its totient is φ = 65260.

The previous prime is 131783. The next prime is 131797. The reversal of 131786 is 687131.

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

It is a Curzon number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11 + ... + 513.

It is an arithmetic number, because the mean of its divisors is an integer number (24948).

2¹³¹⁷⁸⁶ is an apocalyptic number.

131786 is a deficient number, since it is larger than the sum of its proper divisors (67798).

131786 is a wasteful number, since it uses less digits than its factorization.

131786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its digits is 1008, while the sum is 26.

The square root of 131786 is about 363.0234152228. The cubic root of 131786 is about 50.8889033672. Note that the first 3 decimals are identical.

The spelling of 131786 in words is "one hundred thirty-one thousand, seven hundred eighty-six".