23315 has 4 divisors (see below), whose sum is σ = 27984. Its totient is φ = 18648.

The previous prime is 23311. The next prime is 23321. The reversal of 23315 is 51332.

23315 = 12² + 13² + ... + 41².

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 23315 - 2² = 23311 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 23315.

It is not an unprimeable number, because it can be changed into a prime (23311) 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, 2327 + ... + 2336.

It is an arithmetic number, because the mean of its divisors is an integer number (6996).

2²³³¹⁵ is an apocalyptic number.

23315 is a deficient number, since it is larger than the sum of its proper divisors (4669).

23315 is an equidigital number, since it uses as much as digits as its factorization.

23315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668.

The product of its digits is 90, while the sum is 14.

The square root of 23315 is about 152.6925014531. The cubic root of 23315 is about 28.5679102811.

Adding to 23315 its reverse (51332), we get a palindrome (74647).

The spelling of 23315 in words is "twenty-three thousand, three hundred fifteen".