2315 has 4 divisors (see below), whose sum is σ = 2784.
Its totient is φ = 1848.
The previous prime is 2311. The next prime is 2333. The reversal of 2315 is 5132.
Subtracting from 2315 its sum of digits (11), we obtain a square (2304 = 482).
Adding to 2315 its reverse (5132), we get a palindrome (7447).
It can be divided in two parts, 2 and 315, that multiplied together give a triangular number (630 = T35).
2315 = 27 + 37.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 2315 - 22 = 2311 is a prime.
It is a d-powerful number, because it can be written as 2 + 1 + 37 + 53 .
It is a Duffinian number.
It is a nialpdrome in base 14.
It is a junction number, because it is equal to n+sod(n) for n = 2296 and 2305.
It is not an unprimeable number, because it can be changed into a prime (2311) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227 + ... + 236.
It is an arithmetic number, because the mean of its divisors is an integer number (696).
22315 is an apocalyptic number.
2315 is a deficient number, since it is larger than the sum of its proper divisors (469).
2315 is an equidigital number, since it uses as much as digits as its factorization.
2315 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 468.
The product of its digits is 30, while the sum is 11.
The square root of 2315 is about 48.1144468949.
The cubic root of 2315 is about 13.2286948461.
The spelling of 2315 in words is "two thousand, three hundred fifteen".