131996578871 has 2 divisors, whose sum is σ = 131996578872. Its totient is φ = 131996578870.

The previous prime is 131996578837. The next prime is 131996578877. The reversal of 131996578871 is 178875699131.

It is a strong prime.

It is an emirp because it is prime and its reverse (178875699131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 131996578871 - 2³⁰ = 130922837047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131996578798 and 131996578807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131996578877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65998289435 + 65998289436.

It is an arithmetic number, because the mean of its divisors is an integer number (65998289436).

Almost surely, 2^131996578871 is an apocalyptic number.

131996578871 is a deficient number, since it is larger than the sum of its proper divisors (1).

131996578871 is an equidigital number, since it uses as much as digits as its factorization.

131996578871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22861440, while the sum is 65.

The spelling of 131996578871 in words is "one hundred thirty-one billion, nine hundred ninety-six million, five hundred seventy-eight thousand, eight hundred seventy-one".