23112556 has 12 divisors (see below), whose sum is σ = 40959520. Its totient is φ = 11409840.

The previous prime is 23112553. The next prime is 23112563. The reversal of 23112556 is 65521132.

It is a self number, because there is not a number n which added to its sum of digits gives 23112556.

It is not an unprimeable number, because it can be changed into a prime (23112553) 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, 36255 + ... + 36886.

Almost surely, 2^23112556 is an apocalyptic number.

It is an amenable number.

23112556 is a deficient number, since it is larger than the sum of its proper divisors (17846964).

23112556 is a wasteful number, since it uses less digits than its factorization.

23112556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73224 (or 73222 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 23112556 is about 4807.5519757981. The cubic root of 23112556 is about 284.8498480636.

Adding to 23112556 its reverse (65521132), we get a palindrome (88633688).

It can be divided in two parts, 231 and 12556, that multiplied together give a triangular number (2900436 = T₂₄₀₈).

The spelling of 23112556 in words is "twenty-three million, one hundred twelve thousand, five hundred fifty-six".