131065243577 has 2 divisors, whose sum is σ = 131065243578. Its totient is φ = 131065243576.

The previous prime is 131065243483. The next prime is 131065243649. The reversal of 131065243577 is 775342560131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118218381241 + 12846862336 = 343829^2 + 113344^2 .

It is a cyclic number.

It is not a de Polignac number, because 131065243577 - 2²⁰ = 131064195001 is a prime.

It is not a weakly prime, because it can be changed into another prime (131065248577) 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, 65532621788 + 65532621789.

It is an arithmetic number, because the mean of its divisors is an integer number (65532621789).

Almost surely, 2^131065243577 is an apocalyptic number.

It is an amenable number.

131065243577 is a deficient number, since it is larger than the sum of its proper divisors (1).

131065243577 is an equidigital number, since it uses as much as digits as its factorization.

131065243577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 131065243577 in words is "one hundred thirty-one billion, sixty-five million, two hundred forty-three thousand, five hundred seventy-seven".