131579 has 4 divisors (see below), whose sum is σ = 150384. Its totient is φ = 112776.

The previous prime is 131561. The next prime is 131581. The reversal of 131579 is 975131.

131579 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 975131 = 23 ⋅42397.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131519) 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, 9392 + ... + 9405.

It is an arithmetic number, because the mean of its divisors is an integer number (37596).

2¹³¹⁵⁷⁹ is an apocalyptic number.

131579 is a deficient number, since it is larger than the sum of its proper divisors (18805).

131579 is an equidigital number, since it uses as much as digits as its factorization.

131579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18804.

The product of its digits is 945, while the sum is 26.

The square root of 131579 is about 362.7381976026. The cubic root of 131579 is about 50.8622451912.

The spelling of 131579 in words is "one hundred thirty-one thousand, five hundred seventy-nine".