3031020044021 has 16 divisors (see below), whose sum is σ = 3086808490800. Its totient is φ = 2975741902848.

The previous prime is 3031020044009. The next prime is 3031020044023. The reversal of 3031020044021 is 1204400201303.

It can be written as a sum of positive squares in 8 ways, for example, as 199335460900 + 2831684583121 = 446470^2 + 1682761^2 .

It is a cyclic number.

It is not a de Polignac number, because 3031020044021 - 2¹⁰ = 3031020042997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3031020043984 and 3031020044002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031020044023) 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, 19610981 + ... + 19764933.

It is an arithmetic number, because the mean of its divisors is an integer number (192925530675).

Almost surely, 2^{3031020044021} is an apocalyptic number.

It is an amenable number.

3031020044021 is a deficient number, since it is larger than the sum of its proper divisors (55788446779).

3031020044021 is a wasteful number, since it uses less digits than its factorization.

3031020044021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155608.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 3031020044021 its reverse (1204400201303), we get a palindrome (4235420245324).

The spelling of 3031020044021 in words is "three trillion, thirty-one billion, twenty million, forty-four thousand, twenty-one".