23015 has 4 divisors (see below), whose sum is σ = 27624. Its totient is φ = 18408.

The previous prime is 23011. The next prime is 23017. The reversal of 23015 is 51032.

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 23015 - 2² = 23011 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 22987 and 23005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011) 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, 2297 + ... + 2306.

It is an arithmetic number, because the mean of its divisors is an integer number (6906).

2²³⁰¹⁵ is an apocalyptic number.

23015 is a deficient number, since it is larger than the sum of its proper divisors (4609).

23015 is an equidigital number, since it uses as much as digits as its factorization.

23015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4608.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 23015 is about 151.7069543561. The cubic root of 23015 is about 28.4448507745. Note that the first 3 decimals are identical.

Adding to 23015 its reverse (51032), we get a palindrome (74047).

The spelling of 23015 in words is "twenty-three thousand, fifteen".