321300216 has 64 divisors (see below), whose sum is σ = 898502400. Its totient is φ = 106380000.

The previous prime is 321300137. The next prime is 321300263. The reversal of 321300216 is 612003123.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27691 + ... + 37541.

It is an arithmetic number, because the mean of its divisors is an integer number (14039100).

Almost surely, 2^321300216 is an apocalyptic number.

321300216 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 321300216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449251200).

321300216 is an abundant number, since it is smaller than the sum of its proper divisors (577202184).

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

321300216 is a wasteful number, since it uses less digits than its factorization.

321300216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10017 (or 10007 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 321300216 is about 17924.8491207039. The cubic root of 321300216 is about 684.9155176682.

Adding to 321300216 its reverse (612003123), we get a palindrome (933303339).

The spelling of 321300216 in words is "three hundred twenty-one million, three hundred thousand, two hundred sixteen".