1321340344324 has 144 divisors (see below), whose sum is σ = 3297527162496. Its totient is φ = 454545907200.

The previous prime is 1321340344241. The next prime is 1321340344333. The reversal of 1321340344324 is 4234430431231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321340344324.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 380217 + ... + 1669504.

It is an arithmetic number, because the mean of its divisors is an integer number (22899494184).

Almost surely, 2^{1321340344324} is an apocalyptic number.

1321340344324 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1321340344324 is an abundant number, since it is smaller than the sum of its proper divisors (1976186818172).

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

1321340344324 is a wasteful number, since it uses less digits than its factorization.

1321340344324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2049786 (or 2049777 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 1321340344324 its reverse (4234430431231), we get a palindrome (5555770775555).

The spelling of 1321340344324 in words is "one trillion, three hundred twenty-one billion, three hundred forty million, three hundred forty-four thousand, three hundred twenty-four".