321340452 has 96 divisors (see below), whose sum is σ = 814544640. Its totient is φ = 98334720.

The previous prime is 321340441. The next prime is 321340469. The reversal of 321340452 is 254043123.

321340452 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

321340452 is strictly pandigital in base 9.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 825874 + ... + 826262.

It is an arithmetic number, because the mean of its divisors is an integer number (8484840).

Almost surely, 2^321340452 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 321340452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407272320).

321340452 is an abundant number, since it is smaller than the sum of its proper divisors (493204188).

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

321340452 is a wasteful number, since it uses less digits than its factorization.

321340452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 321340452 is about 17925.9714381118. The cubic root of 321340452 is about 684.9441068288.

Adding to 321340452 its reverse (254043123), we get a palindrome (575383575).

The spelling of 321340452 in words is "three hundred twenty-one million, three hundred forty thousand, four hundred fifty-two".