321342440140 has 24 divisors (see below), whose sum is σ = 675439978752. Its totient is φ = 128418718080.

The previous prime is 321342440087. The next prime is 321342440207. The reversal of 321342440140 is 41044243123.

It is a junction number, because it is equal to n+sod(n) for n = 321342440099 and 321342440108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7368841 + ... + 7412320.

It is an arithmetic number, because the mean of its divisors is an integer number (28143332448).

Almost surely, 2^321342440140 is an apocalyptic number.

It is an amenable number.

321342440140 is an abundant number, since it is smaller than the sum of its proper divisors (354097538612).

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

321342440140 is a wasteful number, since it uses less digits than its factorization.

321342440140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14782257 (or 14782255 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 321342440140 its reverse (41044243123), we get a palindrome (362386683263).

The spelling of 321342440140 in words is "three hundred twenty-one billion, three hundred forty-two million, four hundred forty thousand, one hundred forty".