131440605073 has 2 divisors, whose sum is σ = 131440605074. Its totient is φ = 131440605072.

The previous prime is 131440605067. The next prime is 131440605113. The reversal of 131440605073 is 370506044131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84597794449 + 46842810624 = 290857^2 + 216432^2 .

It is a cyclic number.

It is not a de Polignac number, because 131440605073 - 2⁵ = 131440605041 is a prime.

It is not a weakly prime, because it can be changed into another prime (131440605973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65720302536 + 65720302537.

It is an arithmetic number, because the mean of its divisors is an integer number (65720302537).

Almost surely, 2^131440605073 is an apocalyptic number.

It is an amenable number.

131440605073 is a deficient number, since it is larger than the sum of its proper divisors (1).

131440605073 is an equidigital number, since it uses as much as digits as its factorization.

131440605073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The spelling of 131440605073 in words is "one hundred thirty-one billion, four hundred forty million, six hundred five thousand, seventy-three".