131479979 has 2 divisors, whose sum is σ = 131479980. Its totient is φ = 131479978.

The previous prime is 131479963. The next prime is 131479987. The reversal of 131479979 is 979974131.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (979974131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131479979 - 2⁴ = 131479963 is a prime.

It is not a weakly prime, because it can be changed into another prime (131479279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65739989 + 65739990.

It is an arithmetic number, because the mean of its divisors is an integer number (65739990).

Almost surely, 2^131479979 is an apocalyptic number.

131479979 is a deficient number, since it is larger than the sum of its proper divisors (1).

131479979 is an equidigital number, since it uses as much as digits as its factorization.

131479979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 428652, while the sum is 50.

The square root of 131479979 is about 11466.4719508661. The cubic root of 131479979 is about 508.4948303736.

The spelling of 131479979 in words is "one hundred thirty-one million, four hundred seventy-nine thousand, nine hundred seventy-nine".