23215633 has 4 divisors (see below), whose sum is σ = 26532160. Its totient is φ = 19899108.

The previous prime is 23215597. The next prime is 23215667. The reversal of 23215633 is 33651232.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23215633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23215598 and 23215607.

It is not an unprimeable number, because it can be changed into a prime (23015633) 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 3 ways as a sum of consecutive naturals, for example, 1658253 + ... + 1658266.

It is an arithmetic number, because the mean of its divisors is an integer number (6633040).

Almost surely, 2^23215633 is an apocalyptic number.

It is an amenable number.

23215633 is a deficient number, since it is larger than the sum of its proper divisors (3316527).

23215633 is an equidigital number, since it uses as much as digits as its factorization.

23215633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3316526.

The product of its digits is 3240, while the sum is 25.

The square root of 23215633 is about 4818.2603707147. The cubic root of 23215633 is about 285.2726763453.

Adding to 23215633 its reverse (33651232), we get a palindrome (56866865).

The spelling of 23215633 in words is "twenty-three million, two hundred fifteen thousand, six hundred thirty-three".