23112812 has 12 divisors (see below), whose sum is σ = 40593336. Its totient is φ = 11514720.

The previous prime is 23112811. The next prime is 23112829. The reversal of 23112812 is 21821132.

It is not an unprimeable number, because it can be changed into a prime (23112811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9158 + ... + 11405.

It is an arithmetic number, because the mean of its divisors is an integer number (3382778).

Almost surely, 2^23112812 is an apocalyptic number.

It is an amenable number.

23112812 is a deficient number, since it is larger than the sum of its proper divisors (17480524).

23112812 is a wasteful number, since it uses less digits than its factorization.

23112812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20848 (or 20846 counting only the distinct ones).

The product of its digits is 192, while the sum is 20.

The square root of 23112812 is about 4807.5786005015. The cubic root of 23112812 is about 284.8508997472.

Adding to 23112812 its reverse (21821132), we get a palindrome (44933944).

The spelling of 23112812 in words is "twenty-three million, one hundred twelve thousand, eight hundred twelve".