3128558213 has 12 divisors (see below), whose sum is σ = 3440447724. Its totient is φ = 2842804800.

The previous prime is 3128558203. The next prime is 3128558231.

3128558213 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 1549052164 + 1579506049 = 39358^2 + 39743^2 .

It is not a de Polignac number, because 3128558213 - 2¹⁰ = 3128557189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128558203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 326945 + ... + 336377.

It is an arithmetic number, because the mean of its divisors is an integer number (286703977).

Almost surely, 2^3128558213 is an apocalyptic number.

It is an amenable number.

3128558213 is a deficient number, since it is larger than the sum of its proper divisors (311889511).

3128558213 is a wasteful number, since it uses less digits than its factorization.

3128558213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12196 (or 12185 counting only the distinct ones).

The product of its digits is 57600, while the sum is 38.

The square root of 3128558213 is about 55933.5160078463. The cubic root of 3128558213 is about 1462.5635534561.

It can be divided in two parts, 31285 and 58213, that added together give a palindrome (89498).

The spelling of 3128558213 in words is "three billion, one hundred twenty-eight million, five hundred fifty-eight thousand, two hundred thirteen".