131087 has 8 divisors (see below), whose sum is σ = 151632. Its totient is φ = 112000.

The previous prime is 131071. The next prime is 131101. The reversal of 131087 is 780131.

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 131087 - 2⁴ = 131071 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164 + ... + 537.

It is an arithmetic number, because the mean of its divisors is an integer number (18954).

2¹³¹⁰⁸⁷ is an apocalyptic number.

131087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

131087 is a deficient number, since it is larger than the sum of its proper divisors (20545).

131087 is a wasteful number, since it uses less digits than its factorization.

131087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 131087 is about 362.0593873938. The cubic root of 131087 is about 50.7987713345.

The spelling of 131087 in words is "one hundred thirty-one thousand, eighty-seven".