323531503680 has 672 divisors, whose sum is σ = 1303247941632. Its totient is φ = 66557399040.

The previous prime is 323531503639. The next prime is 323531503717. The reversal of 323531503680 is 86305135323.

It is a tau number, because it is divible by the number of its divisors (672).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 83749429 + ... + 83753291.

It is an arithmetic number, because the mean of its divisors is an integer number (1939357056).

Almost surely, 2^323531503680 is an apocalyptic number.

323531503680 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 323531503680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (651623970816).

323531503680 is an abundant number, since it is smaller than the sum of its proper divisors (979716437952).

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

323531503680 is a wasteful number, since it uses less digits than its factorization.

323531503680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015 (or 3994 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 323531503680 in words is "three hundred twenty-three billion, five hundred thirty-one million, five hundred three thousand, six hundred eighty".