131279 has 6 divisors (see below), whose sum is σ = 136296. Its totient is φ = 126420.

The previous prime is 131267. The next prime is 131293. The reversal of 131279 is 972131.

It is not a de Polignac number, because 131279 - 2⁸ = 131023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1814 + ... + 1884.

It is an arithmetic number, because the mean of its divisors is an integer number (22716).

2¹³¹²⁷⁹ is an apocalyptic number.

131279 is a deficient number, since it is larger than the sum of its proper divisors (5017).

131279 is an frugal number, since it uses more digits than its factorization.

131279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 114 counting only the distinct ones).

The product of its digits is 378, while the sum is 23.

The square root of 131279 is about 362.3244402466. The cubic root of 131279 is about 50.8235604850.

The spelling of 131279 in words is "one hundred thirty-one thousand, two hundred seventy-nine".