323220434120000 has 140 divisors (see below), whose sum is σ = 801604587636996. Its totient is φ = 129268339200000.

The previous prime is 323220434119819. The next prime is 323220434120009. The reversal of 323220434120000 is 21434022323.

It can be written as a sum of positive squares in 10 ways, for example, as 316234519944256 + 6985914175744 = 17782984^2 + 2643088^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323220434120009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 261503450 + ... + 262736550.

Almost surely, 2^{323220434120000} 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 323220434120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (400802293818498).

323220434120000 is an abundant number, since it is smaller than the sum of its proper divisors (478384153516996).

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

323220434120000 is an equidigital number, since it uses as much as digits as its factorization.

323220434120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239686 (or 1239661 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 323220434120000 its reverse (21434022323), we get a palindrome (323241868142323).

The spelling of 323220434120000 in words is "three hundred twenty-three trillion, two hundred twenty billion, four hundred thirty-four million, one hundred twenty thousand".