23513321 has 8 divisors (see below), whose sum is σ = 25517184. Its totient is φ = 21537360.

The previous prime is 23513311. The next prime is 23513333. The reversal of 23513321 is 12331532.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23513321 - 2¹⁴ = 23496937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23513293 and 23513302.

It is not an unprimeable number, because it can be changed into a prime (23513311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5201 + ... + 8606.

It is an arithmetic number, because the mean of its divisors is an integer number (3189648).

Almost surely, 2^23513321 is an apocalyptic number.

It is an amenable number.

23513321 is a deficient number, since it is larger than the sum of its proper divisors (2003863).

23513321 is a wasteful number, since it uses less digits than its factorization.

23513321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13951.

The product of its digits is 540, while the sum is 20.

The square root of 23513321 is about 4849.0536190065. The cubic root of 23513321 is about 286.4868271393.

Adding to 23513321 its reverse (12331532), we get a palindrome (35844853).

The spelling of 23513321 in words is "twenty-three million, five hundred thirteen thousand, three hundred twenty-one".