131886971 has 2 divisors, whose sum is σ = 131886972. Its totient is φ = 131886970.

The previous prime is 131886967. The next prime is 131887033. The reversal of 131886971 is 179688131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131886971 - 2² = 131886967 is a prime.

It is not a weakly prime, because it can be changed into another prime (131889971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65943485 + 65943486.

It is an arithmetic number, because the mean of its divisors is an integer number (65943486).

Almost surely, 2^131886971 is an apocalyptic number.

131886971 is a deficient number, since it is larger than the sum of its proper divisors (1).

131886971 is an equidigital number, since it uses as much as digits as its factorization.

131886971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 44.

The square root of 131886971 is about 11484.2052837800. The cubic root of 131886971 is about 509.0189663345.

The spelling of 131886971 in words is "one hundred thirty-one million, eight hundred eighty-six thousand, nine hundred seventy-one".