23523321 has 16 divisors (see below), whose sum is σ = 32716800. Its totient is φ = 15015168.

The previous prime is 23523317. The next prime is 23523337. The reversal of 23523321 is 12332532.

It is not a de Polignac number, because 23523321 - 2² = 23523317 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23523341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9985 + ... + 12113.

It is an arithmetic number, because the mean of its divisors is an integer number (2044800).

Almost surely, 2^23523321 is an apocalyptic number.

It is an amenable number.

23523321 is a deficient number, since it is larger than the sum of its proper divisors (9193479).

23523321 is a wasteful number, since it uses less digits than its factorization.

23523321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288.

The product of its digits is 1080, while the sum is 21.

The square root of 23523321 is about 4850.0846384367. The cubic root of 23523321 is about 286.5274347908.

Adding to 23523321 its reverse (12332532), we get a palindrome (35855853).

The spelling of 23523321 in words is "twenty-three million, five hundred twenty-three thousand, three hundred twenty-one".