2315815 has 12 divisors (see below), whose sum is σ = 2935224. Its totient is φ = 1753776.

The previous prime is 2315773. The next prime is 2315839. The reversal of 2315815 is 5185132.

It is a happy number.

2315815 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 2315815 - 2¹¹ = 2313767 is a prime.

It is a super-2 number, since 2×2315815² = 10725998228450, which contains 22 as substring.

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 2315815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1164 + ... + 2446.

It is an arithmetic number, because the mean of its divisors is an integer number (244602).

2^2315815 is an apocalyptic number.

2315815 is a deficient number, since it is larger than the sum of its proper divisors (619409).

2315815 is a wasteful number, since it uses less digits than its factorization.

2315815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326 (or 1307 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 2315815 is about 1521.7802075201. The cubic root of 2315815 is about 132.3024705941.

The spelling of 2315815 in words is "two million, three hundred fifteen thousand, eight hundred fifteen".