3071730721 has 16 divisors (see below), whose sum is σ = 3200601600. Its totient is φ = 2944480000.

The previous prime is 3071730689. The next prime is 3071730743. The reversal of 3071730721 is 1270371703.

It is a cyclic number.

It is not a de Polignac number, because 3071730721 - 2⁵ = 3071730689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3071730751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3486201 + ... + 3487081.

It is an arithmetic number, because the mean of its divisors is an integer number (200037600).

Almost surely, 2^3071730721 is an apocalyptic number.

It is an amenable number.

3071730721 is a deficient number, since it is larger than the sum of its proper divisors (128870879).

3071730721 is a wasteful number, since it uses less digits than its factorization.

3071730721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its (nonzero) digits is 6174, while the sum is 31.

The square root of 3071730721 is about 55423.1965967319. The cubic root of 3071730721 is about 1453.6539979885.

The spelling of 3071730721 in words is "three billion, seventy-one million, seven hundred thirty thousand, seven hundred twenty-one".