23123530 has 16 divisors (see below), whose sum is σ = 42508800. Its totient is φ = 9052432.

The previous prime is 23123521. The next prime is 23123563. The reversal of 23123530 is 3532132.

It is a junction number, because it is equal to n+sod(n) for n = 23123498 and 23123507.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24130 + ... + 25069.

It is an arithmetic number, because the mean of its divisors is an integer number (2656800).

Almost surely, 2^23123530 is an apocalyptic number.

23123530 is a deficient number, since it is larger than the sum of its proper divisors (19385270).

23123530 is a wasteful number, since it uses less digits than its factorization.

23123530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49253.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 23123530 is about 4808.6931696668. The cubic root of 23123530 is about 284.8949238170.

Adding to 23123530 its reverse (3532132), we get a palindrome (26655662).

It can be divided in two parts, 23123 and 530, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 23123530 in words is "twenty-three million, one hundred twenty-three thousand, five hundred thirty".