187313687 has 12 divisors (see below), whose sum is σ = 212536128. Its totient is φ = 164788800.

The previous prime is 187313683. The next prime is 187313689. The reversal of 187313687 is 786313781.

187313687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 187313687 - 2² = 187313683 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 (187313683) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21218 + ... + 28719.

It is an arithmetic number, because the mean of its divisors is an integer number (17711344).

Almost surely, 2^187313687 is an apocalyptic number.

187313687 is a deficient number, since it is larger than the sum of its proper divisors (25222441).

187313687 is a wasteful number, since it uses less digits than its factorization.

187313687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49990 (or 49979 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 187313687 is about 13686.2590579018. The cubic root of 187313687 is about 572.1674805430.

The spelling of 187313687 in words is "one hundred eighty-seven million, three hundred thirteen thousand, six hundred eighty-seven".