27187313 has 4 divisors (see below), whose sum is σ = 27197760. Its totient is φ = 27176868.

The previous prime is 27187289. The next prime is 27187319. The reversal of 27187313 is 31378172.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 27187313 - 2¹⁸ = 26925169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27187313.

It is not an unprimeable number, because it can be changed into a prime (27187319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2156 + ... + 7682.

It is an arithmetic number, because the mean of its divisors is an integer number (6799440).

Almost surely, 2^27187313 is an apocalyptic number.

It is an amenable number.

27187313 is a deficient number, since it is larger than the sum of its proper divisors (10447).

27187313 is an equidigital number, since it uses as much as digits as its factorization.

27187313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10446.

The product of its digits is 7056, while the sum is 32.

The square root of 27187313 is about 5214.1454716952. The cubic root of 27187313 is about 300.6921537012.

The spelling of 27187313 in words is "twenty-seven million, one hundred eighty-seven thousand, three hundred thirteen".