23215317 has 8 divisors (see below), whose sum is σ = 31790496. Its totient is φ = 15058512.

The previous prime is 23215279. The next prime is 23215327. The reversal of 23215317 is 71351232.

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

It is not a de Polignac number, because 23215317 - 2⁶ = 23215253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23215327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104463 + ... + 104684.

It is an arithmetic number, because the mean of its divisors is an integer number (3973812).

Almost surely, 2^23215317 is an apocalyptic number.

It is an amenable number.

23215317 is a deficient number, since it is larger than the sum of its proper divisors (8575179).

23215317 is a wasteful number, since it uses less digits than its factorization.

23215317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209187.

The product of its digits is 1260, while the sum is 24.

The square root of 23215317 is about 4818.2275786849. The cubic root of 23215317 is about 285.2713820080.

Adding to 23215317 its reverse (71351232), we get a palindrome (94566549).

It can be divided in two parts, 23215 and 317, that added together give a palindrome (23532).

The spelling of 23215317 in words is "twenty-three million, two hundred fifteen thousand, three hundred seventeen".