3128013 has 36 divisors (see below), whose sum is σ = 5415228. Its totient is φ = 1733760.

The previous prime is 3128011. The next prime is 3128033. The reversal of 3128013 is 3108213.

It can be written as a sum of positive squares in 2 ways, for example, as 1432809 + 1695204 = 1197^2 + 1302^2 .

It is not a de Polignac number, because 3128013 - 2¹ = 3128011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128011) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17995 + ... + 18167.

It is an arithmetic number, because the mean of its divisors is an integer number (150423).

Almost surely, 2^3128013 is an apocalyptic number.

It is an amenable number.

3128013 is a deficient number, since it is larger than the sum of its proper divisors (2287215).

3128013 is a wasteful number, since it uses less digits than its factorization.

3128013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 3128013 is about 1768.6189527425. The cubic root of 3128013 is about 146.2478588334.

The spelling of 3128013 in words is "three million, one hundred twenty-eight thousand, thirteen".