131340579 has 4 divisors (see below), whose sum is σ = 175120776. Its totient is φ = 87560384.

The previous prime is 131340571. The next prime is 131340617. The reversal of 131340579 is 975043131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 975043131 = 3 ⋅325014377.

It is a cyclic number.

It is not a de Polignac number, because 131340579 - 2³ = 131340571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131340571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21890094 + ... + 21890099.

It is an arithmetic number, because the mean of its divisors is an integer number (43780194).

Almost surely, 2^131340579 is an apocalyptic number.

131340579 is a deficient number, since it is larger than the sum of its proper divisors (43780197).

131340579 is an equidigital number, since it uses as much as digits as its factorization.

131340579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43780196.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 131340579 is about 11460.3917472310. The cubic root of 131340579 is about 508.3150584012.

The spelling of 131340579 in words is "one hundred thirty-one million, three hundred forty thousand, five hundred seventy-nine".