131028464187 has 16 divisors (see below), whose sum is σ = 200809908000. Its totient is φ = 84340160352.

The previous prime is 131028464179. The next prime is 131028464197. The reversal of 131028464187 is 781464820131.

131028464187 is a `hidden beast` number, since 1 + 3 + 1 + 0 + 2 + 8 + 464 + 187 = 666.

It is not a de Polignac number, because 131028464187 - 2³ = 131028464179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131028464197) 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, 83670012 + ... + 83671577.

It is an arithmetic number, because the mean of its divisors is an integer number (12550619250).

Almost surely, 2^131028464187 is an apocalyptic number.

131028464187 is a deficient number, since it is larger than the sum of its proper divisors (69781443813).

131028464187 is a wasteful number, since it uses less digits than its factorization.

131028464187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167341627 (or 167341621 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The spelling of 131028464187 in words is "one hundred thirty-one billion, twenty-eight million, four hundred sixty-four thousand, one hundred eighty-seven".