23117812 has 12 divisors (see below), whose sum is σ = 40537476. Its totient is φ = 11535680.

The previous prime is 23117803. The next prime is 23117819. The reversal of 23117812 is 21871132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13220496 + 9897316 = 3636^2 + 3146^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23117819) 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, 3463 + ... + 7630.

It is an arithmetic number, because the mean of its divisors is an integer number (3378123).

Almost surely, 2^23117812 is an apocalyptic number.

It is an amenable number.

23117812 is a deficient number, since it is larger than the sum of its proper divisors (17419664).

23117812 is a wasteful number, since it uses less digits than its factorization.

23117812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11618 (or 11616 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 23117812 is about 4808.0985846798. The cubic root of 23117812 is about 284.8714388867.

Adding to 23117812 its reverse (21871132), we get a palindrome (44988944).

The spelling of 23117812 in words is "twenty-three million, one hundred seventeen thousand, eight hundred twelve".