3130728165 has 24 divisors (see below), whose sum is σ = 5627582688. Its totient is φ = 1669721040.

The previous prime is 3130728103. The next prime is 3130728197. The reversal of 3130728165 is 5618270313.

3130728165 is a `hidden beast` number, since 313 + 0 + 7 + 281 + 65 = 666.

It is not a de Polignac number, because 3130728165 - 2⁸ = 3130727909 is a prime.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1287151 + ... + 1289580.

It is an arithmetic number, because the mean of its divisors is an integer number (234482612).

Almost surely, 2^3130728165 is an apocalyptic number.

It is an amenable number.

3130728165 is a deficient number, since it is larger than the sum of its proper divisors (2496854523).

3130728165 is an equidigital number, since it uses as much as digits as its factorization.

3130728165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2576751 (or 2576739 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 3130728165 is about 55952.9102460274. The cubic root of 3130728165 is about 1462.9016175123.

Adding to 3130728165 its reverse (5618270313), we get a palindrome (8748998478).

The spelling of 3130728165 in words is "three billion, one hundred thirty million, seven hundred twenty-eight thousand, one hundred sixty-five".