23212417 has 4 divisors (see below), whose sum is σ = 23243220. Its totient is φ = 23181616.

The previous prime is 23212403. The next prime is 23212439. The reversal of 23212417 is 71421232.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13220496 + 9991921 = 3636^2 + 3161^2 .

It is a cyclic number.

It is not a de Polignac number, because 23212417 - 2⁷ = 23212289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23212447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14242 + ... + 15787.

It is an arithmetic number, because the mean of its divisors is an integer number (5810805).

Almost surely, 2^23212417 is an apocalyptic number.

It is an amenable number.

23212417 is a deficient number, since it is larger than the sum of its proper divisors (30803).

23212417 is an equidigital number, since it uses as much as digits as its factorization.

23212417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30802.

The product of its digits is 672, while the sum is 22.

The square root of 23212417 is about 4817.9266287481. The cubic root of 23212417 is about 285.2595030482.

Adding to 23212417 its reverse (71421232), we get a palindrome (94633649).

The spelling of 23212417 in words is "twenty-three million, two hundred twelve thousand, four hundred seventeen".