23453523 has 32 divisors (see below), whose sum is σ = 37811520. Its totient is φ = 14307840.

The previous prime is 23453509. The next prime is 23453527. The reversal of 23453523 is 32535432.

It is not a de Polignac number, because 23453523 - 2¹² = 23449427 is a prime.

It is a super-2 number, since 2×23453523² = 1100135482223058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (23453527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16293 + ... + 17673.

It is an arithmetic number, because the mean of its divisors is an integer number (1181610).

Almost surely, 2^23453523 is an apocalyptic number.

23453523 is a deficient number, since it is larger than the sum of its proper divisors (14357997).

23453523 is a wasteful number, since it uses less digits than its factorization.

23453523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1438 counting only the distinct ones).

The product of its digits is 10800, while the sum is 27.

The square root of 23453523 is about 4842.8837483466. The cubic root of 23453523 is about 286.2437609161.

Adding to 23453523 its reverse (32535432), we get a palindrome (55988955).

The spelling of 23453523 in words is "twenty-three million, four hundred fifty-three thousand, five hundred twenty-three".