131311063203457 has 2 divisors, whose sum is σ = 131311063203458. Its totient is φ = 131311063203456.

The previous prime is 131311063203443. The next prime is 131311063203473. The reversal of 131311063203457 is 754302360113131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87626841968241 + 43684221235216 = 9360921^2 + 6609404^2 .

It is a cyclic number.

It is not a de Polignac number, because 131311063203457 - 2⁷ = 131311063203329 is a prime.

It is not a weakly prime, because it can be changed into another prime (131311063203427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65655531601728 + 65655531601729.

It is an arithmetic number, because the mean of its divisors is an integer number (65655531601729).

Almost surely, 2^{131311063203457} is an apocalyptic number.

It is an amenable number.

131311063203457 is a deficient number, since it is larger than the sum of its proper divisors (1).

131311063203457 is an equidigital number, since it uses as much as digits as its factorization.

131311063203457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 131311063203457 in words is "one hundred thirty-one trillion, three hundred eleven billion, sixty-three million, two hundred three thousand, four hundred fifty-seven".