23313222 has 48 divisors (see below), whose sum is σ = 54654912. Its totient is φ = 7153920.

The previous prime is 23313211. The next prime is 23313259. The reversal of 23313222 is 22231332.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 = 23313195 and 23313204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13572 + ... + 15192.

It is an arithmetic number, because the mean of its divisors is an integer number (1138644).

Almost surely, 2^23313222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23313222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27327456).

23313222 is an abundant number, since it is smaller than the sum of its proper divisors (31341690).

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

23313222 is a wasteful number, since it uses less digits than its factorization.

23313222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693 (or 1690 counting only the distinct ones).

The product of its digits is 432, while the sum is 18.

The square root of 23313222 is about 4828.3767458640. The cubic root of 23313222 is about 285.6718406710.

Adding to 23313222 its reverse (22231332), we get a palindrome (45544554).

The spelling of 23313222 in words is "twenty-three million, three hundred thirteen thousand, two hundred twenty-two".