321331202138123 has 2 divisors, whose sum is σ = 321331202138124. Its totient is φ = 321331202138122.

The previous prime is 321331202138027. The next prime is 321331202138161. The reversal of 321331202138123 is 321831202133123.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (321831202133123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321331202138123 - 2⁴⁸ = 39856225427467 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (321331202038123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160665601069061 + 160665601069062.

It is an arithmetic number, because the mean of its divisors is an integer number (160665601069062).

Almost surely, 2^{321331202138123} is an apocalyptic number.

321331202138123 is a deficient number, since it is larger than the sum of its proper divisors (1).

321331202138123 is an equidigital number, since it uses as much as digits as its factorization.

321331202138123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 321331202138123 in words is "three hundred twenty-one trillion, three hundred thirty-one billion, two hundred two million, one hundred thirty-eight thousand, one hundred twenty-three".