1323200000 has 120 divisors (see below), whose sum is σ = 3308553864. Its totient is φ = 528640000.

The previous prime is 1323199991. The next prime is 1323200003. The reversal of 1323200000 is 23231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323200003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1599587 + ... + 1600413.

Almost surely, 2^1323200000 is an apocalyptic number.

1323200000 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 1323200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1654276932).

1323200000 is an abundant number, since it is smaller than the sum of its proper divisors (1985353864).

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

1323200000 is an frugal number, since it uses more digits than its factorization.

1323200000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 1323200000 is about 36375.8161420469. The cubic root of 1323200000 is about 1097.8470285221.

Adding to 1323200000 its reverse (23231), we get a palindrome (1323223231).

The spelling of 1323200000 in words is "one billion, three hundred twenty-three million, two hundred thousand".