131284 has 12 divisors (see below), whose sum is σ = 239904. Its totient is φ = 62744.

The previous prime is 131267. The next prime is 131293. The reversal of 131284 is 482131.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 622 + ... + 805.

It is an arithmetic number, because the mean of its divisors is an integer number (19992).

2¹³¹²⁸⁴ is an apocalyptic number.

It is an amenable number.

131284 is a deficient number, since it is larger than the sum of its proper divisors (108620).

131284 is a wasteful number, since it uses less digits than its factorization.

131284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1454 (or 1452 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 131284 is about 362.3313400742. The cubic root of 131284 is about 50.8242057128.

The spelling of 131284 in words is "one hundred thirty-one thousand, two hundred eighty-four".