320353216 has 28 divisors (see below), whose sum is σ = 643757920. Its totient is φ = 158146560.

The previous prime is 320353183. The next prime is 320353217. The reversal of 320353216 is 612353023.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320353217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26625 + ... + 36736.

Almost surely, 2^320353216 is an apocalyptic number.

It is an amenable number.

320353216 is an abundant number, since it is smaller than the sum of its proper divisors (323404704).

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

320353216 is an equidigital number, since it uses as much as digits as its factorization.

320353216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63452 (or 63442 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 320353216 is about 17898.4137844670. The cubic root of 320353216 is about 684.2419489923.

The spelling of 320353216 in words is "three hundred twenty million, three hundred fifty-three thousand, two hundred sixteen".