3121345322321 has 16 divisors (see below), whose sum is σ = 3159563151360. Its totient is φ = 3083365232640.

The previous prime is 3121345322297. The next prime is 3121345322327. The reversal of 3121345322321 is 1232235431213.

It is a cyclic number.

It is not a de Polignac number, because 3121345322321 - 2³⁰ = 3120271580497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121345322327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32278175 + ... + 32374731.

It is an arithmetic number, because the mean of its divisors is an integer number (197472696960).

Almost surely, 2^{3121345322321} is an apocalyptic number.

It is an amenable number.

3121345322321 is a deficient number, since it is larger than the sum of its proper divisors (38217829039).

3121345322321 is a wasteful number, since it uses less digits than its factorization.

3121345322321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97784.

The product of its digits is 25920, while the sum is 32.

The spelling of 3121345322321 in words is "three trillion, one hundred twenty-one billion, three hundred forty-five million, three hundred twenty-two thousand, three hundred twenty-one".