131565522671 has 4 divisors (see below), whose sum is σ = 143526024744. Its totient is φ = 119605020600.

The previous prime is 131565522653. The next prime is 131565522707. The reversal of 131565522671 is 176225565131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131565522671 - 2⁶ = 131565522607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131565522601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5980251020 + ... + 5980251041.

It is an arithmetic number, because the mean of its divisors is an integer number (35881506186).

Almost surely, 2^131565522671 is an apocalyptic number.

131565522671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131565522671 is a deficient number, since it is larger than the sum of its proper divisors (11960502073).

131565522671 is a wasteful number, since it uses less digits than its factorization.

131565522671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11960502072.

The product of its digits is 378000, while the sum is 44.

The spelling of 131565522671 in words is "one hundred thirty-one billion, five hundred sixty-five million, five hundred twenty-two thousand, six hundred seventy-one".