23123656 has 8 divisors (see below), whose sum is σ = 43356870. Its totient is φ = 11561824.

The previous prime is 23123563. The next prime is 23123657. The reversal of 23123656 is 65632132.

It can be written as a sum of positive squares in only one way, i.e., 13942756 + 9180900 = 3734^2 + 3030^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (23123657) 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 as a sum of consecutive naturals, namely, 1445221 + ... + 1445236.

Almost surely, 2^23123656 is an apocalyptic number.

It is an amenable number.

23123656 is a deficient number, since it is larger than the sum of its proper divisors (20233214).

23123656 is a wasteful number, since it uses less digits than its factorization.

23123656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890463 (or 2890459 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 23123656 is about 4808.7062709215. The cubic root of 23123656 is about 284.8954412797.

Adding to 23123656 its reverse (65632132), we get a palindrome (88755788).

The spelling of 23123656 in words is "twenty-three million, one hundred twenty-three thousand, six hundred fifty-six".