1323423200 has 144 divisors (see below), whose sum is σ = 3561803280. Its totient is φ = 476160000.

The previous prime is 1323423163. The next prime is 1323423203. The reversal of 1323423200 is 23243231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323423203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 888056 + ... + 889544.

It is an arithmetic number, because the mean of its divisors is an integer number (24734745).

Almost surely, 2^1323423200 is an apocalyptic number.

1323423200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323423200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1780901640).

1323423200 is an abundant number, since it is smaller than the sum of its proper divisors (2238380080).

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

1323423200 is a wasteful number, since it uses less digits than its factorization.

1323423200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 1323423200 is about 36378.8839850812. The cubic root of 1323423200 is about 1097.9087540562.

Adding to 1323423200 its reverse (23243231), we get a palindrome (1346666431).

The spelling of 1323423200 in words is "one billion, three hundred twenty-three million, four hundred twenty-three thousand, two hundred".