131051403542987 has 2 divisors, whose sum is σ = 131051403542988. Its totient is φ = 131051403542986.

The previous prime is 131051403542963. The next prime is 131051403543121. The reversal of 131051403542987 is 789245304150131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131051403542987 - 2⁴⁰ = 129951891915211 is a prime.

It is not a weakly prime, because it can be changed into another prime (131051403542947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65525701771493 + 65525701771494.

It is an arithmetic number, because the mean of its divisors is an integer number (65525701771494).

Almost surely, 2^{131051403542987} is an apocalyptic number.

131051403542987 is a deficient number, since it is larger than the sum of its proper divisors (1).

131051403542987 is an equidigital number, since it uses as much as digits as its factorization.

131051403542987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 131051403542987 in words is "one hundred thirty-one trillion, fifty-one billion, four hundred three million, five hundred forty-two thousand, nine hundred eighty-seven".