131567720739913 has 2 divisors, whose sum is σ = 131567720739914. Its totient is φ = 131567720739912.

The previous prime is 131567720739821. The next prime is 131567720739919. The reversal of 131567720739913 is 319937027765131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85760434840249 + 45807285899664 = 9260693^2 + 6768108^2 .

It is a cyclic number.

It is not a de Polignac number, because 131567720739913 - 2²¹ = 131567718642761 is a prime.

It is not a weakly prime, because it can be changed into another prime (131567720739919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65783860369956 + 65783860369957.

It is an arithmetic number, because the mean of its divisors is an integer number (65783860369957).

Almost surely, 2^{131567720739913} is an apocalyptic number.

It is an amenable number.

131567720739913 is a deficient number, since it is larger than the sum of its proper divisors (1).

131567720739913 is an equidigital number, since it uses as much as digits as its factorization.

131567720739913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45008460, while the sum is 64.

The spelling of 131567720739913 in words is "one hundred thirty-one trillion, five hundred sixty-seven billion, seven hundred twenty million, seven hundred thirty-nine thousand, nine hundred thirteen".