323021000220 has 96 divisors (see below), whose sum is σ = 936485867520. Its totient is φ = 83094063360.

The previous prime is 323021000189. The next prime is 323021000231. The reversal of 323021000220 is 22000120323.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 323021000220.

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 31 ways as a sum of consecutive naturals, for example, 1871365 + ... + 2036675.

It is an arithmetic number, because the mean of its divisors is an integer number (9755061120).

Almost surely, 2^323021000220 is an apocalyptic number.

323021000220 is a gapful number since it is divisible by the number (30) 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 323021000220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468242933760).

323021000220 is an abundant number, since it is smaller than the sum of its proper divisors (613464867300).

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

323021000220 is a wasteful number, since it uses less digits than its factorization.

323021000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166475 (or 166473 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 323021000220 its reverse (22000120323), we get a palindrome (345021120543).

The spelling of 323021000220 in words is "three hundred twenty-three billion, twenty-one million, two hundred twenty", and thus it is an aban number.