131002319987 has 16 divisors (see below), whose sum is σ = 163908831744. Its totient is φ = 101716440000.

The previous prime is 131002319963. The next prime is 131002320019. The reversal of 131002319987 is 789913200131.

It is not a de Polignac number, because 131002319987 - 2¹² = 131002315891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131002319947) 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, 3005639 + ... + 3048912.

It is an arithmetic number, because the mean of its divisors is an integer number (10244301984).

Almost surely, 2^131002319987 is an apocalyptic number.

131002319987 is a deficient number, since it is larger than the sum of its proper divisors (32906511757).

131002319987 is a wasteful number, since it uses less digits than its factorization.

131002319987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6054850.

The product of its (nonzero) digits is 81648, while the sum is 44.

The spelling of 131002319987 in words is "one hundred thirty-one billion, two million, three hundred nineteen thousand, nine hundred eighty-seven".