131218248887 has 16 divisors (see below), whose sum is σ = 148400553600. Its totient is φ = 114929132640.

The previous prime is 131218248853. The next prime is 131218248899. The reversal of 131218248887 is 788842812131.

It is a cyclic number.

It is not a de Polignac number, because 131218248887 - 2²⁸ = 130949813431 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 (131218248827) 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, 291437 + ... + 589382.

It is an arithmetic number, because the mean of its divisors is an integer number (9275034600).

Almost surely, 2^131218248887 is an apocalyptic number.

131218248887 is a deficient number, since it is larger than the sum of its proper divisors (17182304713).

131218248887 is a wasteful number, since it uses less digits than its factorization.

131218248887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881326.

The product of its digits is 1376256, while the sum is 53.

The spelling of 131218248887 in words is "one hundred thirty-one billion, two hundred eighteen million, two hundred forty-eight thousand, eight hundred eighty-seven".