187321364317 has 4 divisors (see below), whose sum is σ = 187326397980. Its totient is φ = 187316330656.

The previous prime is 187321364297. The next prime is 187321364323. The reversal of 187321364317 is 713463123781.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56649236121 + 130672128196 = 238011^2 + 361486^2 .

It is a cyclic number.

It is not a de Polignac number, because 187321364317 - 2²⁷ = 187187146589 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 (187321364327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2460592 + ... + 2535577.

It is an arithmetic number, because the mean of its divisors is an integer number (46831599495).

Almost surely, 2^187321364317 is an apocalyptic number.

It is an amenable number.

187321364317 is a deficient number, since it is larger than the sum of its proper divisors (5033663).

187321364317 is an equidigital number, since it uses as much as digits as its factorization.

187321364317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5033662.

The product of its digits is 508032, while the sum is 46.

The spelling of 187321364317 in words is "one hundred eighty-seven billion, three hundred twenty-one million, three hundred sixty-four thousand, three hundred seventeen".