131523571 has 2 divisors, whose sum is σ = 131523572. Its totient is φ = 131523570.

The previous prime is 131523563. The next prime is 131523583. The reversal of 131523571 is 175325131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131523571 - 2³ = 131523563 is a prime.

It is not a weakly prime, because it can be changed into another prime (131523551) 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, 65761785 + 65761786.

It is an arithmetic number, because the mean of its divisors is an integer number (65761786).

Almost surely, 2^131523571 is an apocalyptic number.

131523571 is a deficient number, since it is larger than the sum of its proper divisors (1).

131523571 is an equidigital number, since it uses as much as digits as its factorization.

131523571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150, while the sum is 28.

The square root of 131523571 is about 11468.3726395684. The cubic root of 131523571 is about 508.5510210767.

The spelling of 131523571 in words is "one hundred thirty-one million, five hundred twenty-three thousand, five hundred seventy-one".