131799 has 4 divisors (see below), whose sum is σ = 175736. Its totient is φ = 87864.

The previous prime is 131797. The next prime is 131837. The reversal of 131799 is 997131.

131799 is nontrivially palindromic in base 14.

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

It is not a de Polignac number, because 131799 - 2¹ = 131797 is a prime.

It is a D-number.

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 (131797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21964 + ... + 21969.

It is an arithmetic number, because the mean of its divisors is an integer number (43934).

2¹³¹⁷⁹⁹ is an apocalyptic number.

131799 is a deficient number, since it is larger than the sum of its proper divisors (43937).

131799 is an equidigital number, since it uses as much as digits as its factorization.

131799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43936.

The product of its digits is 1701, while the sum is 30.

The square root of 131799 is about 363.0413199623. The cubic root of 131799 is about 50.8905766203.

Subtracting from 131799 its sum of digits (30), we obtain a square (131769 = 363²).

The spelling of 131799 in words is "one hundred thirty-one thousand, seven hundred ninety-nine".