321020123243 has 2 divisors, whose sum is σ = 321020123244. Its totient is φ = 321020123242.

The previous prime is 321020123201. The next prime is 321020123273. The reversal of 321020123243 is 342321020123.

It is a strong prime.

It is an emirp because it is prime and its reverse (342321020123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321020123243 - 2¹⁴ = 321020106859 is a prime.

It is not a weakly prime, because it can be changed into another prime (321020123273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160510061621 + 160510061622.

It is an arithmetic number, because the mean of its divisors is an integer number (160510061622).

Almost surely, 2^321020123243 is an apocalyptic number.

321020123243 is a deficient number, since it is larger than the sum of its proper divisors (1).

321020123243 is an equidigital number, since it uses as much as digits as its factorization.

321020123243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 321020123243 its reverse (342321020123), we get a palindrome (663341143366).

The spelling of 321020123243 in words is "three hundred twenty-one billion, twenty million, one hundred twenty-three thousand, two hundred forty-three".