131971475214591 has 16 divisors (see below), whose sum is σ = 181878104260608. Its totient is φ = 85030413098400.

The previous prime is 131971475214587. The next prime is 131971475214599. The reversal of 131971475214591 is 195412574179131.

It is not a de Polignac number, because 131971475214591 - 2² = 131971475214587 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131971475214599) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937213695 + ... + 937354496.

It is an arithmetic number, because the mean of its divisors is an integer number (11367381516288).

Almost surely, 2^{131971475214591} is an apocalyptic number.

131971475214591 is a deficient number, since it is larger than the sum of its proper divisors (49906629046017).

131971475214591 is a wasteful number, since it uses less digits than its factorization.

131971475214591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874568982.

The product of its digits is 9525600, while the sum is 60.

The spelling of 131971475214591 in words is "one hundred thirty-one trillion, nine hundred seventy-one billion, four hundred seventy-five million, two hundred fourteen thousand, five hundred ninety-one".