323091216 has 120 divisors (see below), whose sum is σ = 1038308544. Its totient is φ = 91872000.

The previous prime is 323091199. The next prime is 323091221. The reversal of 323091216 is 612190323.

It is a self number, because there is not a number n which added to its sum of digits gives 323091216.

It is an unprimeable number.

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, 252370 + ... + 253646.

Almost surely, 2^323091216 is an apocalyptic number.

323091216 is a gapful number since it is divisible by the number (36) 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 323091216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519154272).

323091216 is an abundant number, since it is smaller than the sum of its proper divisors (715217328).

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

323091216 is a wasteful number, since it uses less digits than its factorization.

323091216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 323091216 is about 17974.7382734770. The cubic root of 323091216 is about 686.1857849476.

The spelling of 323091216 in words is "three hundred twenty-three million, ninety-one thousand, two hundred sixteen".