23315523 has 24 divisors (see below), whose sum is σ = 39453120. Its totient is φ = 12111120.

The previous prime is 23315497. The next prime is 23315563. The reversal of 23315523 is 32551332.

It is a happy number.

It is not a de Polignac number, because 23315523 - 2⁶ = 23315459 is a prime.

It is a super-2 number, since 2×23315523² = 1087227225527058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23315493 and 23315502.

It is not an unprimeable number, because it can be changed into a prime (23315563) 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 23 ways as a sum of consecutive naturals, for example, 5593 + ... + 8826.

It is an arithmetic number, because the mean of its divisors is an integer number (1643880).

Almost surely, 2^23315523 is an apocalyptic number.

23315523 is a deficient number, since it is larger than the sum of its proper divisors (16137597).

23315523 is a wasteful number, since it uses less digits than its factorization.

23315523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14447 (or 14440 counting only the distinct ones).

The product of its digits is 2700, while the sum is 24.

The square root of 23315523 is about 4828.6150188227. The cubic root of 23315523 is about 285.6812389040.

Adding to 23315523 its reverse (32551332), we get a palindrome (55866855).

The spelling of 23315523 in words is "twenty-three million, three hundred fifteen thousand, five hundred twenty-three".