323520032 has 48 divisors (see below), whose sum is σ = 696330432. Its totient is φ = 146737920.

The previous prime is 323520031. The next prime is 323520037. The reversal of 323520032 is 230025323.

It is a super-2 number, since 2×323520032² = 209330422210562048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 323519986 and 323520013.

It is not an unprimeable number, because it can be changed into a prime (323520031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260918 + ... + 262154.

It is an arithmetic number, because the mean of its divisors is an integer number (14506884).

Almost surely, 2^323520032 is an apocalyptic number.

323520032 is a gapful number since it is divisible by the number (32) 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 323520032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348165216).

323520032 is an abundant number, since it is smaller than the sum of its proper divisors (372810400).

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

323520032 is a wasteful number, since it uses less digits than its factorization.

323520032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001 (or 1993 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 323520032 is about 17986.6626142817. The cubic root of 323520032 is about 686.4892259440.

Adding to 323520032 its reverse (230025323), we get a palindrome (553545355).

The spelling of 323520032 in words is "three hundred twenty-three million, five hundred twenty thousand, thirty-two".