321001301320 has 128 divisors (see below), whose sum is σ = 832456800000. Its totient is φ = 109123034112.

The previous prime is 321001301317. The next prime is 321001301321. The reversal of 321001301320 is 23103100123.

It is a junction number, because it is equal to n+sod(n) for n = 321001301294 and 321001301303.

It is not an unprimeable number, because it can be changed into a prime (321001301321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32259706 + ... + 32269654.

It is an arithmetic number, because the mean of its divisors is an integer number (6503568750).

Almost surely, 2^321001301320 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 321001301320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416228400000).

321001301320 is an abundant number, since it is smaller than the sum of its proper divisors (511455498680).

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

321001301320 is a wasteful number, since it uses less digits than its factorization.

321001301320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10935 (or 10931 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 321001301320 its reverse (23103100123), we get a palindrome (344104401443).

The spelling of 321001301320 in words is "three hundred twenty-one billion, one million, three hundred one thousand, three hundred twenty".