23117215 has 8 divisors (see below), whose sum is σ = 30262608. Its totient is φ = 16812480.

The previous prime is 23117209. The next prime is 23117219. The reversal of 23117215 is 51271132.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-23117215 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23117219) 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, 210102 + ... + 210211.

It is an arithmetic number, because the mean of its divisors is an integer number (3782826).

Almost surely, 2^23117215 is an apocalyptic number.

23117215 is a deficient number, since it is larger than the sum of its proper divisors (7145393).

23117215 is a wasteful number, since it uses less digits than its factorization.

23117215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420329.

The product of its digits is 420, while the sum is 22.

The square root of 23117215 is about 4808.0365015253. The cubic root of 23117215 is about 284.8689866692.

Adding to 23117215 its reverse (51271132), we get a palindrome (74388347).

It can be divided in two parts, 23117 and 215, that added together give a palindrome (23332).

The spelling of 23117215 in words is "twenty-three million, one hundred seventeen thousand, two hundred fifteen".