23123817 has 24 divisors (see below), whose sum is σ = 36379200. Its totient is φ = 14097888.

The previous prime is 23123813. The next prime is 23123827. The reversal of 23123817 is 71832132.

It is not a de Polignac number, because 23123817 - 2² = 23123813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123813) 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 23 ways as a sum of consecutive naturals, for example, 2628 + ... + 7290.

It is an arithmetic number, because the mean of its divisors is an integer number (1515800).

Almost surely, 2^23123817 is an apocalyptic number.

It is an amenable number.

23123817 is a deficient number, since it is larger than the sum of its proper divisors (13255383).

23123817 is a wasteful number, since it uses less digits than its factorization.

23123817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4717 (or 4714 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 23123817 is about 4808.7230113617. The cubic root of 23123817 is about 284.8961024794.

Adding to 23123817 its reverse (71832132), we get a palindrome (94955949).

The spelling of 23123817 in words is "twenty-three million, one hundred twenty-three thousand, eight hundred seventeen".