321231335323139 has 2 divisors, whose sum is σ = 321231335323140. Its totient is φ = 321231335323138.

The previous prime is 321231335323123. The next prime is 321231335323207. The reversal of 321231335323139 is 931323533132123.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 321231335323139 - 2⁴ = 321231335323123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 321231335323139.

It is not a weakly prime, because it can be changed into another prime (321231335329139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160615667661569 + 160615667661570.

It is an arithmetic number, because the mean of its divisors is an integer number (160615667661570).

Almost surely, 2^{321231335323139} is an apocalyptic number.

321231335323139 is a deficient number, since it is larger than the sum of its proper divisors (1).

321231335323139 is an equidigital number, since it uses as much as digits as its factorization.

321231335323139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 787320, while the sum is 44.

The spelling of 321231335323139 in words is "three hundred twenty-one trillion, two hundred thirty-one billion, three hundred thirty-five million, three hundred twenty-three thousand, one hundred thirty-nine".