321024402322040 has 64 divisors (see below), whose sum is σ = 732618220570560. Its totient is φ = 126576974039040.

The previous prime is 321024402321923. The next prime is 321024402322049. The reversal of 321024402322040 is 40223204420123.

It is a junction number, because it is equal to n+sod(n) for n = 321024402321994 and 321024402322012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321024402322049) 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, 4061342 + ... + 25662098.

It is an arithmetic number, because the mean of its divisors is an integer number (11447159696415).

Almost surely, 2^{321024402322040} 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 321024402322040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366309110285280).

321024402322040 is an abundant number, since it is smaller than the sum of its proper divisors (411593818248520).

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

321024402322040 is a wasteful number, since it uses less digits than its factorization.

321024402322040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21606072 (or 21606068 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 321024402322040 its reverse (40223204420123), we get a palindrome (361247606742163).

The spelling of 321024402322040 in words is "three hundred twenty-one trillion, twenty-four billion, four hundred two million, three hundred twenty-two thousand, forty".