320341434421 has 4 divisors (see below), whose sum is σ = 320345786412. Its totient is φ = 320337082432.

The previous prime is 320341434407. The next prime is 320341434467. The reversal of 320341434421 is 124434143023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124434143023 = 32237 ⋅3859979.

It can be written as a sum of positive squares in 2 ways, for example, as 21378533796 + 298962900625 = 146214^2 + 546775^2 .

It is a cyclic number.

It is not a de Polignac number, because 320341434421 - 2¹⁷ = 320341303349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320341432421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2063650 + ... + 2213443.

It is an arithmetic number, because the mean of its divisors is an integer number (80086446603).

Almost surely, 2^320341434421 is an apocalyptic number.

It is an amenable number.

320341434421 is a deficient number, since it is larger than the sum of its proper divisors (4351991).

320341434421 is an equidigital number, since it uses as much as digits as its factorization.

320341434421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4351990.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 320341434421 its reverse (124434143023), we get a palindrome (444775577444).

The spelling of 320341434421 in words is "three hundred twenty billion, three hundred forty-one million, four hundred thirty-four thousand, four hundred twenty-one".