1323031311200 has 36 divisors (see below), whose sum is σ = 3229850190420. Its totient is φ = 529212524160.

The previous prime is 1323031311193. The next prime is 1323031311223. The reversal of 1323031311200 is 21131303231.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 826893770 + ... + 826895369.

It is an arithmetic number, because the mean of its divisors is an integer number (89718060845).

Almost surely, 2^{1323031311200} is an apocalyptic number.

1323031311200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323031311200 is an abundant number, since it is smaller than the sum of its proper divisors (1906818879220).

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

1323031311200 is a wasteful number, since it uses less digits than its factorization.

1323031311200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653789159 (or 1653789146 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1323031311200 its reverse (21131303231), we get a palindrome (1344162614431).

The spelling of 1323031311200 in words is "one trillion, three hundred twenty-three billion, thirty-one million, three hundred eleven thousand, two hundred".