323074871079721 has 2 divisors, whose sum is σ = 323074871079722. Its totient is φ = 323074871079720.

The previous prime is 323074871079673. The next prime is 323074871079731. The reversal of 323074871079721 is 127970178470323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320567145463321 + 2507725616400 = 17904389^2 + 1583580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323074871079721 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 323074871079721.

It is not a weakly prime, because it can be changed into another prime (323074871079731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161537435539860 + 161537435539861.

It is an arithmetic number, because the mean of its divisors is an integer number (161537435539861).

Almost surely, 2^{323074871079721} is an apocalyptic number.

It is an amenable number.

323074871079721 is a deficient number, since it is larger than the sum of its proper divisors (1).

323074871079721 is an equidigital number, since it uses as much as digits as its factorization.

323074871079721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24893568, while the sum is 61.

The spelling of 323074871079721 in words is "three hundred twenty-three trillion, seventy-four billion, eight hundred seventy-one million, seventy-nine thousand, seven hundred twenty-one".