131919386873 has 2 divisors, whose sum is σ = 131919386874. Its totient is φ = 131919386872.

The previous prime is 131919386867. The next prime is 131919386899. The reversal of 131919386873 is 378683919131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101548656889 + 30370729984 = 318667^2 + 174272^2 .

It is a cyclic number.

It is not a de Polignac number, because 131919386873 - 2⁸ = 131919386617 is a prime.

It is not a weakly prime, because it can be changed into another prime (131919386803) 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, 65959693436 + 65959693437.

It is an arithmetic number, because the mean of its divisors is an integer number (65959693437).

Almost surely, 2^131919386873 is an apocalyptic number.

It is an amenable number.

131919386873 is a deficient number, since it is larger than the sum of its proper divisors (1).

131919386873 is an equidigital number, since it uses as much as digits as its factorization.

131919386873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 59.

The spelling of 131919386873 in words is "one hundred thirty-one billion, nine hundred nineteen million, three hundred eighty-six thousand, eight hundred seventy-three".