131843 has 4 divisors (see below), whose sum is σ = 136128. Its totient is φ = 127560.

The previous prime is 131839. The next prime is 131849. The reversal of 131843 is 348131.

131843 = 12² + 13² + ... + 73².

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131843 - 2² = 131839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131849) 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 3 ways as a sum of consecutive naturals, for example, 2096 + ... + 2157.

It is an arithmetic number, because the mean of its divisors is an integer number (34032).

2¹³¹⁸⁴³ is an apocalyptic number.

131843 is a deficient number, since it is larger than the sum of its proper divisors (4285).

131843 is an equidigital number, since it uses as much as digits as its factorization.

131843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284.

The product of its digits is 288, while the sum is 20.

The square root of 131843 is about 363.1019140682. The cubic root of 131843 is about 50.8962391222.

Adding to 131843 its reverse (348131), we get a palindrome (479974).

The spelling of 131843 in words is "one hundred thirty-one thousand, eight hundred forty-three".