131278112687 has 2 divisors, whose sum is σ = 131278112688. Its totient is φ = 131278112686.

The previous prime is 131278112611. The next prime is 131278112701. The reversal of 131278112687 is 786211872131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131278112687 - 2¹⁶ = 131278047151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131278114687) 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, 65639056343 + 65639056344.

It is an arithmetic number, because the mean of its divisors is an integer number (65639056344).

Almost surely, 2^131278112687 is an apocalyptic number.

131278112687 is a deficient number, since it is larger than the sum of its proper divisors (1).

131278112687 is an equidigital number, since it uses as much as digits as its factorization.

131278112687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 47.

The spelling of 131278112687 in words is "one hundred thirty-one billion, two hundred seventy-eight million, one hundred twelve thousand, six hundred eighty-seven".