323520 has 56 divisors (see below), whose sum is σ = 1030224. Its totient is φ = 86016.

The previous prime is 323509. The next prime is 323537. The reversal of 323520 is 25323.

323520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 323520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792 + ... + 1128.

2³²³⁵²⁰ is an apocalyptic number.

323520 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 323520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (515112).

323520 is an abundant number, since it is smaller than the sum of its proper divisors (706704).

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

323520 is a wasteful number, since it uses less digits than its factorization.

323520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 15.

The square root of 323520 is about 568.7881855313. The cubic root of 323520 is about 68.6489203310.

Adding to 323520 its reverse (25323), we get a palindrome (348843).

The spelling of 323520 in words is "three hundred twenty-three thousand, five hundred twenty".