3130212031021 has 4 divisors (see below), whose sum is σ = 3158929572700. Its totient is φ = 3101494489344.

The previous prime is 3130212030971. The next prime is 3130212031043. The reversal of 3130212031021 is 1201302120313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1164804306121 + 1965407724900 = 1079261^2 + 1401930^2 .

It is a cyclic number.

It is not a de Polignac number, because 3130212031021 - 2¹⁵ = 3130211998253 is a prime.

It is a super-2 number, since 2×3130212031021² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3130212031021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130212031321) 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, 14358770676 + ... + 14358770893.

It is an arithmetic number, because the mean of its divisors is an integer number (789732393175).

Almost surely, 2^{3130212031021} is an apocalyptic number.

It is an amenable number.

3130212031021 is a deficient number, since it is larger than the sum of its proper divisors (28717541679).

3130212031021 is a wasteful number, since it uses less digits than its factorization.

3130212031021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28717541678.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 3130212031021 its reverse (1201302120313), we get a palindrome (4331514151334).

The spelling of 3130212031021 in words is "three trillion, one hundred thirty billion, two hundred twelve million, thirty-one thousand, twenty-one".