323031032221 has 2 divisors, whose sum is σ = 323031032222. Its totient is φ = 323031032220.

The previous prime is 323031032179. The next prime is 323031032251. The reversal of 323031032221 is 122230130323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 204068124121 + 118962908100 = 451739^2 + 344910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323031032221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 323031032192 and 323031032201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (323031032251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161515516110 + 161515516111.

It is an arithmetic number, because the mean of its divisors is an integer number (161515516111).

Almost surely, 2^323031032221 is an apocalyptic number.

It is an amenable number.

323031032221 is a deficient number, since it is larger than the sum of its proper divisors (1).

323031032221 is an equidigital number, since it uses as much as digits as its factorization.

323031032221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 323031032221 its reverse (122230130323), we get a palindrome (445261162544).

The spelling of 323031032221 in words is "three hundred twenty-three billion, thirty-one million, thirty-two thousand, two hundred twenty-one".