131025442393 has 2 divisors, whose sum is σ = 131025442394. Its totient is φ = 131025442392.

The previous prime is 131025442369. The next prime is 131025442447. The reversal of 131025442393 is 393244520131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122968046224 + 8057396169 = 350668^2 + 89763^2 .

It is a cyclic number.

It is not a de Polignac number, because 131025442393 - 2⁹ = 131025441881 is a prime.

It is not a weakly prime, because it can be changed into another prime (131025412393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65512721196 + 65512721197.

It is an arithmetic number, because the mean of its divisors is an integer number (65512721197).

Almost surely, 2^131025442393 is an apocalyptic number.

It is an amenable number.

131025442393 is a deficient number, since it is larger than the sum of its proper divisors (1).

131025442393 is an equidigital number, since it uses as much as digits as its factorization.

131025442393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 131025442393 in words is "one hundred thirty-one billion, twenty-five million, four hundred forty-two thousand, three hundred ninety-three".