323031220121 has 4 divisors (see below), whose sum is σ = 323048937744. Its totient is φ = 323013502500.

The previous prime is 323031220117. The next prime is 323031220147. The reversal of 323031220121 is 121022130323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121022130323 = 183661 ⋅658943.

It is a cyclic number.

It is not a de Polignac number, because 323031220121 - 2² = 323031220117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 323031220093 and 323031220102.

It is not an unprimeable number, because it can be changed into a prime (323031220181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8831435 + ... + 8867936.

It is an arithmetic number, because the mean of its divisors is an integer number (80762234436).

Almost surely, 2^323031220121 is an apocalyptic number.

It is an amenable number.

323031220121 is a deficient number, since it is larger than the sum of its proper divisors (17717623).

323031220121 is a wasteful number, since it uses less digits than its factorization.

323031220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17717622.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 323031220121 its reverse (121022130323), we get a palindrome (444053350444).

The spelling of 323031220121 in words is "three hundred twenty-three billion, thirty-one million, two hundred twenty thousand, one hundred twenty-one".