23331216 has 40 divisors (see below), whose sum is σ = 60905824. Its totient is φ = 7695360.

The previous prime is 23331199. The next prime is 23331229. The reversal of 23331216 is 61213332.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 23331192 and 23331201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2151 + ... + 7161.

Almost surely, 2^23331216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23331216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30452912).

23331216 is an abundant number, since it is smaller than the sum of its proper divisors (37574608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23331216 is a wasteful number, since it uses less digits than its factorization.

23331216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5119 (or 5113 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 23331216 is about 4830.2397456027. The cubic root of 23331216 is about 285.7453191053.

Adding to 23331216 its reverse (61213332), we get a palindrome (84544548).

The spelling of 23331216 in words is "twenty-three million, three hundred thirty-one thousand, two hundred sixteen".