3130778128 has 20 divisors (see below), whose sum is σ = 6091923708. Its totient is φ = 1558668800.

The previous prime is 3130778117. The next prime is 3130778141. The reversal of 3130778128 is 8218770313.

It can be written as a sum of positive squares in 2 ways, for example, as 1113690384 + 2017087744 = 33372^2 + 44912^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416173 + ... + 423628.

Almost surely, 2^3130778128 is an apocalyptic number.

It is an amenable number.

3130778128 is a deficient number, since it is larger than the sum of its proper divisors (2961145580).

3130778128 is a wasteful number, since it uses less digits than its factorization.

3130778128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840042 (or 840036 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 3130778128 is about 55953.3567178950. The cubic root of 3130778128 is about 1462.9093995745.

The spelling of 3130778128 in words is "three billion, one hundred thirty million, seven hundred seventy-eight thousand, one hundred twenty-eight".