3123323130021 has 16 divisors (see below), whose sum is σ = 4345534531584. Its totient is φ = 1991665302704.

The previous prime is 3123323130019. The next prime is 3123323130049. The reversal of 3123323130021 is 1200313233213.

It is a cyclic number.

It is not a de Polignac number, because 3123323130021 - 2¹ = 3123323130019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3123323129973 and 3123323130000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123323130001) 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 15 ways as a sum of consecutive naturals, for example, 12188800 + ... + 12442406.

It is an arithmetic number, because the mean of its divisors is an integer number (271595908224).

Almost surely, 2^{3123323130021} is an apocalyptic number.

It is an amenable number.

3123323130021 is a deficient number, since it is larger than the sum of its proper divisors (1222211401563).

3123323130021 is a wasteful number, since it uses less digits than its factorization.

3123323130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432120.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 3123323130021 its reverse (1200313233213), we get a palindrome (4323636363234).

The spelling of 3123323130021 in words is "three trillion, one hundred twenty-three billion, three hundred twenty-three million, one hundred thirty thousand, twenty-one".