321338152 has 64 divisors (see below), whose sum is σ = 649918080. Its totient is φ = 148591872.

The previous prime is 321338141. The next prime is 321338159. The reversal of 321338152 is 251833123.

It is a self number, because there is not a number n which added to its sum of digits gives 321338152.

It is not an unprimeable number, because it can be changed into a prime (321338159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 809218 + ... + 809614.

It is an arithmetic number, because the mean of its divisors is an integer number (10154970).

Almost surely, 2^321338152 is an apocalyptic number.

It is an amenable number.

321338152 is an abundant number, since it is smaller than the sum of its proper divisors (328579928).

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

321338152 is a wasteful number, since it uses less digits than its factorization.

321338152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 558 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 321338152 is about 17925.9072852673. The cubic root of 321338152 is about 684.9424726584.

The spelling of 321338152 in words is "three hundred twenty-one million, three hundred thirty-eight thousand, one hundred fifty-two".