321321302340 has 48 divisors (see below), whose sum is σ = 899801048832. Its totient is φ = 85676023296.

The previous prime is 321321302317. The next prime is 321321302347. The reversal of 321321302340 is 43203123123.

It is a self number, because there is not a number n which added to its sum of digits gives 321321302340.

It is not an unprimeable number, because it can be changed into a prime (321321302347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243132 + ... + 837708.

It is an arithmetic number, because the mean of its divisors is an integer number (18745855184).

Almost surely, 2^321321302340 is an apocalyptic number.

321321302340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321321302340 is an abundant number, since it is smaller than the sum of its proper divisors (578479746492).

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

321321302340 is a wasteful number, since it uses less digits than its factorization.

321321302340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603596 (or 603594 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 321321302340 its reverse (43203123123), we get a palindrome (364524425463).

The spelling of 321321302340 in words is "three hundred twenty-one billion, three hundred twenty-one million, three hundred two thousand, three hundred forty".