323220100 has 72 divisors (see below), whose sum is σ = 804323520. Its totient is φ = 110440320.

The previous prime is 323220091. The next prime is 323220103. The reversal of 323220100 is 1022323.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (323220103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 271707 + ... + 272893.

It is an arithmetic number, because the mean of its divisors is an integer number (11171160).

Almost surely, 2^323220100 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 323220100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402161760).

323220100 is an abundant number, since it is smaller than the sum of its proper divisors (481103420).

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

323220100 is a wasteful number, since it uses less digits than its factorization.

323220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1590 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 323220100 is about 17978.3230586170. The cubic root of 323220100 is about 686.2770147173.

Adding to 323220100 its reverse (1022323), we get a palindrome (324242423).

It can be divided in two parts, 3232 and 20100, that added together give a palindrome (23332).

The spelling of 323220100 in words is "three hundred twenty-three million, two hundred twenty thousand, one hundred".