23015217 has 8 divisors (see below), whose sum is σ = 30801280. Its totient is φ = 15286320.

The previous prime is 23015207. The next prime is 23015233. The reversal of 23015217 is 71251032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23015217 - 2⁷ = 23015089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23015193 and 23015202.

It is not an unprimeable number, because it can be changed into a prime (23015207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13342 + ... + 14967.

It is an arithmetic number, because the mean of its divisors is an integer number (3850160).

Almost surely, 2^23015217 is an apocalyptic number.

It is an amenable number.

23015217 is a deficient number, since it is larger than the sum of its proper divisors (7786063).

23015217 is a wasteful number, since it uses less digits than its factorization.

23015217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28583.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 23015217 is about 4797.4177429113. The cubic root of 23015217 is about 284.4494017295.

Adding to 23015217 its reverse (71251032), we get a palindrome (94266249).

It can be divided in two parts, 23015 and 217, that added together give a palindrome (23232).

The spelling of 23015217 in words is "twenty-three million, fifteen thousand, two hundred seventeen".