3013728121 has 4 divisors (see below), whose sum is σ = 3015443200. Its totient is φ = 3012013044.

The previous prime is 3013728101. The next prime is 3013728163. The reversal of 3013728121 is 1218273103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3013728121 - 2¹⁵ = 3013695353 is a prime.

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 3013728121.

It is not an unprimeable number, because it can be changed into a prime (3013728101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854901 + ... + 858418.

It is an arithmetic number, because the mean of its divisors is an integer number (753860800).

Almost surely, 2^3013728121 is an apocalyptic number.

It is an amenable number.

3013728121 is a deficient number, since it is larger than the sum of its proper divisors (1715079).

3013728121 is a wasteful number, since it uses less digits than its factorization.

3013728121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715078.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 3013728121 is about 54897.4327359668. The cubic root of 3013728121 is about 1444.4461538899.

The spelling of 3013728121 in words is "three billion, thirteen million, seven hundred twenty-eight thousand, one hundred twenty-one".