131943 has 16 divisors (see below), whose sum is σ = 206336. Its totient is φ = 73440.

The previous prime is 131941. The next prime is 131947. The reversal of 131943 is 349131.

It is not a de Polignac number, because 131943 - 2¹ = 131941 is a prime.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian 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 (131941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1230 + ... + 1332.

It is an arithmetic number, because the mean of its divisors is an integer number (12896).

2¹³¹⁹⁴³ is an apocalyptic number.

131943 is a deficient number, since it is larger than the sum of its proper divisors (74393).

131943 is a wasteful number, since it uses less digits than its factorization.

131943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174.

The product of its digits is 324, while the sum is 21.

The square root of 131943 is about 363.2395903533. The cubic root of 131943 is about 50.9091037608.

The spelling of 131943 in words is "one hundred thirty-one thousand, nine hundred forty-three".