323130030221 has 4 divisors (see below), whose sum is σ = 323131628700. Its totient is φ = 323128431744.

The previous prime is 323130030193. The next prime is 323130030247. The reversal of 323130030221 is 122030031323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122030031323 = 162713 ⋅749971.

It can be written as a sum of positive squares in 2 ways, for example, as 224662728196 + 98467302025 = 473986^2 + 313795^2 .

It is a cyclic number.

It is not a de Polignac number, because 323130030221 - 2¹⁸ = 323129768077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 323130030193 and 323130030202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323130036221) 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 in 3 ways as a sum of consecutive naturals, for example, 443126 + ... + 917943.

It is an arithmetic number, because the mean of its divisors is an integer number (80782907175).

Almost surely, 2^323130030221 is an apocalyptic number.

It is an amenable number.

323130030221 is a deficient number, since it is larger than the sum of its proper divisors (1598479).

323130030221 is a wasteful number, since it uses less digits than its factorization.

323130030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598478.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 323130030221 its reverse (122030031323), we get a palindrome (445160061544).

The spelling of 323130030221 in words is "three hundred twenty-three billion, one hundred thirty million, thirty thousand, two hundred twenty-one".