131517271863 has 48 divisors (see below), whose sum is σ = 207941726720. Its totient is φ = 82836141696.

The previous prime is 131517271849. The next prime is 131517271903. The reversal of 131517271863 is 368172715131.

131517271863 is a `hidden beast` number, since 1 + 3 + 1 + 517 + 2 + 71 + 8 + 63 = 666.

It is not a de Polignac number, because 131517271863 - 2⁹ = 131517271351 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 (131517271813) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1655631 + ... + 1733247.

Almost surely, 2^131517271863 is an apocalyptic number.

131517271863 is a deficient number, since it is larger than the sum of its proper divisors (76424454857).

131517271863 is an equidigital number, since it uses as much as digits as its factorization.

131517271863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78018 (or 78006 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

Adding to 131517271863 its reverse (368172715131), we get a palindrome (499689986994).

The spelling of 131517271863 in words is "one hundred thirty-one billion, five hundred seventeen million, two hundred seventy-one thousand, eight hundred sixty-three".