23123156 has 12 divisors (see below), whose sum is σ = 46246368. Its totient is φ = 9909912.

The previous prime is 23123143. The next prime is 23123159. The reversal of 23123156 is 65132132.

23123156 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23123159) 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, 412886 + ... + 412941.

It is an arithmetic number, because the mean of its divisors is an integer number (3853864).

Almost surely, 2^23123156 is an apocalyptic number.

It is an amenable number.

23123156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23123156 is a wasteful number, since it uses less digits than its factorization.

23123156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825838 (or 825836 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 23123156 is about 4808.6542816052. The cubic root of 23123156 is about 284.8933878451.

Adding to 23123156 its reverse (65132132), we get a palindrome (88255288).

The spelling of 23123156 in words is "twenty-three million, one hundred twenty-three thousand, one hundred fifty-six".