2187313 has 4 divisors (see below), whose sum is σ = 2193408. Its totient is φ = 2181220.

The previous prime is 2187301. The next prime is 2187319. The reversal of 2187313 is 3137812.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2187313 is a prime.

It is a Duffinian number.

2187313 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2187319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2473 + ... + 3238.

It is an arithmetic number, because the mean of its divisors is an integer number (548352).

2^2187313 is an apocalyptic number.

It is an amenable number.

2187313 is a deficient number, since it is larger than the sum of its proper divisors (6095).

2187313 is an equidigital number, since it uses as much as digits as its factorization.

2187313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6094.

The product of its digits is 1008, while the sum is 25.

The square root of 2187313 is about 1478.9567268855. The cubic root of 2187313 is about 129.8086534070.

It can be divided in two parts, 2187 and 313, that added together give a square (2500 = 50²).

The spelling of 2187313 in words is "two million, one hundred eighty-seven thousand, three hundred thirteen".