323020404143220 has 288 divisors, whose sum is σ = 1087441976380032. Its totient is φ = 71380173376512.

The previous prime is 323020404143207. The next prime is 323020404143221. The reversal of 323020404143220 is 22341404020323.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323020404143221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7621507 + ... + 26535413.

It is an arithmetic number, because the mean of its divisors is an integer number (3775840195764).

Almost surely, 2^{323020404143220} is an apocalyptic number.

323020404143220 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 323020404143220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543720988190016).

323020404143220 is an abundant number, since it is smaller than the sum of its proper divisors (764421572236812).

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

323020404143220 is a wasteful number, since it uses less digits than its factorization.

323020404143220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18914127 (or 18914118 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 323020404143220 its reverse (22341404020323), we get a palindrome (345361808163543).

The spelling of 323020404143220 in words is "three hundred twenty-three trillion, twenty billion, four hundred four million, one hundred forty-three thousand, two hundred twenty".