131870779 has 2 divisors, whose sum is σ = 131870780. Its totient is φ = 131870778.

The previous prime is 131870741. The next prime is 131870813. The reversal of 131870779 is 977078131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131870779 - 2⁹ = 131870267 is a prime.

It is not a weakly prime, because it can be changed into another prime (131870729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65935389 + 65935390.

It is an arithmetic number, because the mean of its divisors is an integer number (65935390).

Almost surely, 2^131870779 is an apocalyptic number.

131870779 is a deficient number, since it is larger than the sum of its proper divisors (1).

131870779 is an equidigital number, since it uses as much as digits as its factorization.

131870779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 74088, while the sum is 43.

The square root of 131870779 is about 11483.5002938999. The cubic root of 131870779 is about 508.9981344247.

The spelling of 131870779 in words is "one hundred thirty-one million, eight hundred seventy thousand, seven hundred seventy-nine".