320421132013441 has 16 divisors (see below), whose sum is σ = 334112044541184. Its totient is φ = 307083486486784.

The previous prime is 320421132013429. The next prime is 320421132013447. The reversal of 320421132013441 is 144310231124023.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 320421132013441 - 2⁷ = 320421132013313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320421132013447) 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, 363002566 + ... + 363884191.

It is an arithmetic number, because the mean of its divisors is an integer number (20882002783824).

Almost surely, 2^{320421132013441} is an apocalyptic number.

It is an amenable number.

320421132013441 is a deficient number, since it is larger than the sum of its proper divisors (13690912527743).

320421132013441 is a wasteful number, since it uses less digits than its factorization.

320421132013441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726887000.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 320421132013441 its reverse (144310231124023), we get a palindrome (464731363137464).

The spelling of 320421132013441 in words is "three hundred twenty trillion, four hundred twenty-one billion, one hundred thirty-two million, thirteen thousand, four hundred forty-one".