23117212 has 12 divisors (see below), whose sum is σ = 42834960. Its totient is φ = 10878656.

The previous prime is 23117209. The next prime is 23117219. The reversal of 23117212 is 21271132.

It is a self number, because there is not a number n which added to its sum of digits gives 23117212.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169912 + ... + 170047.

It is an arithmetic number, because the mean of its divisors is an integer number (3569580).

Almost surely, 2^23117212 is an apocalyptic number.

It is an amenable number.

23117212 is a deficient number, since it is larger than the sum of its proper divisors (19717748).

23117212 is a wasteful number, since it uses less digits than its factorization.

23117212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339980 (or 339978 counting only the distinct ones).

The product of its digits is 168, while the sum is 19.

The square root of 23117212 is about 4808.0361895477. The cubic root of 23117212 is about 284.8689743464.

Adding to 23117212 its reverse (21271132), we get a palindrome (44388344).

The spelling of 23117212 in words is "twenty-three million, one hundred seventeen thousand, two hundred twelve".