321001034020 has 24 divisors (see below), whose sum is σ = 674414202168. Its totient is φ = 128340979200.

The previous prime is 321001033993. The next prime is 321001034027. The reversal of 321001034020 is 20430100123.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14722910244 + 306278123776 = 121338^2 + 553424^2 .

It is a junction number, because it is equal to n+sod(n) for n = 321001033985 and 321001034003.

It is not an unprimeable number, because it can be changed into a prime (321001034027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3670351 + ... + 3756790.

It is an arithmetic number, because the mean of its divisors is an integer number (28100591757).

Almost surely, 2^321001034020 is an apocalyptic number.

It is an amenable number.

321001034020 is an abundant number, since it is smaller than the sum of its proper divisors (353413168148).

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

321001034020 is a wasteful number, since it uses less digits than its factorization.

321001034020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7429311 (or 7429309 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 321001034020 its reverse (20430100123), we get a palindrome (341431134143).

The spelling of 321001034020 in words is "three hundred twenty-one billion, one million, thirty-four thousand, twenty".