323129313220 has 144 divisors (see below), whose sum is σ = 836430198912. Its totient is φ = 104190643200.

The previous prime is 323129313217. The next prime is 323129313233. The reversal of 323129313220 is 22313921323.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24166977 + ... + 24180343.

It is an arithmetic number, because the mean of its divisors is an integer number (5808543048).

Almost surely, 2^323129313220 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 323129313220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418215099456).

323129313220 is an abundant number, since it is smaller than the sum of its proper divisors (513300885692).

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

323129313220 is a wasteful number, since it uses less digits than its factorization.

323129313220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14858 (or 14849 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 31.

The spelling of 323129313220 in words is "three hundred twenty-three billion, one hundred twenty-nine million, three hundred thirteen thousand, two hundred twenty".