131823 has 12 divisors (see below), whose sum is σ = 193648. Its totient is φ = 86400.

The previous prime is 131797. The next prime is 131837. The reversal of 131823 is 328131.

131823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 131823 - 2⁶ = 131759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131796 and 131805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 798 + ... + 948.

2¹³¹⁸²³ is an apocalyptic number.

131823 is a deficient number, since it is larger than the sum of its proper divisors (61825).

131823 is a wasteful number, since it uses less digits than its factorization.

131823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 251 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 131823 is about 363.0743725465. The cubic root of 131823 is about 50.8936654139.

Adding to 131823 its sum of digits (18), we get a triangular number (131841 = T₅₁₃).

Adding to 131823 its reverse (328131), we get a palindrome (459954).

The spelling of 131823 in words is "one hundred thirty-one thousand, eight hundred twenty-three".