23412215 has 4 divisors (see below), whose sum is σ = 28094664. Its totient is φ = 18729768.

The previous prime is 23412163. The next prime is 23412217. The reversal of 23412215 is 51221432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23412215 is a prime.

It is a super-2 number, since 2×23412215² = 1096263622412450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23412217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2341217 + ... + 2341226.

It is an arithmetic number, because the mean of its divisors is an integer number (7023666).

Almost surely, 2^23412215 is an apocalyptic number.

23412215 is a deficient number, since it is larger than the sum of its proper divisors (4682449).

23412215 is an equidigital number, since it uses as much as digits as its factorization.

23412215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4682448.

The product of its digits is 480, while the sum is 20.

The square root of 23412215 is about 4838.6170544898. The cubic root of 23412215 is about 286.0756112537.

Adding to 23412215 its reverse (51221432), we get a palindrome (74633647).

The spelling of 23412215 in words is "twenty-three million, four hundred twelve thousand, two hundred fifteen".