1323444220 has 48 divisors (see below), whose sum is σ = 3363111360. Its totient is φ = 427060224.

The previous prime is 1323444211. The next prime is 1323444247. The reversal of 1323444220 is 224443231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 275655 + ... + 280414.

It is an arithmetic number, because the mean of its divisors is an integer number (70064820).

Almost surely, 2^1323444220 is an apocalyptic number.

1323444220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323444220 is an abundant number, since it is smaller than the sum of its proper divisors (2039667140).

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

1323444220 is a wasteful number, since it uses less digits than its factorization.

1323444220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556102 (or 556100 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1323444220 is about 36379.1728877939. The cubic root of 1323444220 is about 1097.9145667395.

Adding to 1323444220 its reverse (224443231), we get a palindrome (1547887451).

The spelling of 1323444220 in words is "one billion, three hundred twenty-three million, four hundred forty-four thousand, two hundred twenty".