131487 has 8 divisors (see below), whose sum is σ = 179760. Its totient is φ = 85440.

The previous prime is 131479. The next prime is 131489. The reversal of 131487 is 784131.

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

It is not a de Polignac number, because 131487 - 2³ = 131479 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131489) 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, 412 + ... + 657.

It is an arithmetic number, because the mean of its divisors is an integer number (22470).

2¹³¹⁴⁸⁷ is an apocalyptic number.

131487 is a deficient number, since it is larger than the sum of its proper divisors (48273).

131487 is a wasteful number, since it uses less digits than its factorization.

131487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113.

The product of its digits is 672, while the sum is 24.

The square root of 131487 is about 362.6113622048. The cubic root of 131487 is about 50.8503881381.

The spelling of 131487 in words is "one hundred thirty-one thousand, four hundred eighty-seven".