320324142643 has 2 divisors, whose sum is σ = 320324142644. Its totient is φ = 320324142642.

The previous prime is 320324142641. The next prime is 320324142661. The reversal of 320324142643 is 346241423023.

It is a weak prime.

It is an emirp because it is prime and its reverse (346241423023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320324142643 - 2¹ = 320324142641 is a prime.

It is a super-2 number, since 2×320324142643² (a number of 24 digits) contains 22 as substring.

Together with 320324142641, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 320324142599 and 320324142608.

It is not a weakly prime, because it can be changed into another prime (320324142641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160162071321 + 160162071322.

It is an arithmetic number, because the mean of its divisors is an integer number (160162071322).

Almost surely, 2^320324142643 is an apocalyptic number.

320324142643 is a deficient number, since it is larger than the sum of its proper divisors (1).

320324142643 is an equidigital number, since it uses as much as digits as its factorization.

320324142643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 320324142643 its reverse (346241423023), we get a palindrome (666565565666).

The spelling of 320324142643 in words is "three hundred twenty billion, three hundred twenty-four million, one hundred forty-two thousand, six hundred forty-three".