23215105 has 8 divisors (see below), whose sum is σ = 27885312. Its totient is φ = 18553968.

The previous prime is 23215103. The next prime is 23215111. The reversal of 23215105 is 50151232.

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

It is a cyclic number.

It is not a de Polignac number, because 23215105 - 2¹ = 23215103 is a prime.

It is a super-2 number, since 2×23215105² = 1077882200322050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23215103) 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, 6354 + ... + 9316.

It is an arithmetic number, because the mean of its divisors is an integer number (3485664).

Almost surely, 2^23215105 is an apocalyptic number.

It is an amenable number.

23215105 is a deficient number, since it is larger than the sum of its proper divisors (4670207).

23215105 is a wasteful number, since it uses less digits than its factorization.

23215105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4535.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 23215105 is about 4818.2055788436. The cubic root of 23215105 is about 285.2705136486.

Adding to 23215105 its reverse (50151232), we get a palindrome (73366337).

The spelling of 23215105 in words is "twenty-three million, two hundred fifteen thousand, one hundred five".