2313565 has 4 divisors (see below), whose sum is σ = 2776284. Its totient is φ = 1850848.

The previous prime is 2313557. The next prime is 2313569. The reversal of 2313565 is 5653132.

It is a happy number.

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 480249 + 1833316 = 693^2 + 1354^2 .

It is a cyclic number.

It is not a de Polignac number, because 2313565 - 2³ = 2313557 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 (2313569) 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, 231352 + ... + 231361.

It is an arithmetic number, because the mean of its divisors is an integer number (694071).

2^2313565 is an apocalyptic number.

It is an amenable number.

2313565 is a deficient number, since it is larger than the sum of its proper divisors (462719).

2313565 is an equidigital number, since it uses as much as digits as its factorization.

2313565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462718.

The product of its digits is 2700, while the sum is 25.

The square root of 2313565 is about 1521.0407621099. The cubic root of 2313565 is about 132.2596092231.

Adding to 2313565 its reverse (5653132), we get a palindrome (7966697).

It can be divided in two parts, 231356 and 5, that added together give a square (231361 = 481²).

The spelling of 2313565 in words is "two million, three hundred thirteen thousand, five hundred sixty-five".