2223312 has 80 divisors (see below), whose sum is σ = 7082880. Its totient is φ = 585216.

The previous prime is 2223283. The next prime is 2223317. The reversal of 2223312 is 2133222.

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 = 2223291 and 2223300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223317) 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, 4114 + ... + 4622.

It is an arithmetic number, because the mean of its divisors is an integer number (88536).

2^2223312 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 2223312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3541440).

2223312 is an abundant number, since it is smaller than the sum of its proper divisors (4859568).

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

2223312 is a wasteful number, since it uses less digits than its factorization.

2223312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 534 counting only the distinct ones).

The product of its digits is 144, while the sum is 15.

The square root of 2223312 is about 1491.0774627765. The cubic root of 2223312 is about 130.5169162317.

Adding to 2223312 its reverse (2133222), we get a palindrome (4356534).

The spelling of 2223312 in words is "two million, two hundred twenty-three thousand, three hundred twelve".