1031728930 has 16 divisors (see below), whose sum is σ = 1857618360. Its totient is φ = 412579072.

The previous prime is 1031728909. The next prime is 1031728933. The reversal of 1031728930 is 398271301.

1031728930 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 321879481 + 709849449 = 17941^2 + 26643^2 .

It is not an unprimeable number, because it can be changed into a prime (1031728933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31476 + ... + 55264.

Almost surely, 2^1031728930 is an apocalyptic number.

1031728930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1031728930 is a deficient number, since it is larger than the sum of its proper divisors (825889430).

1031728930 is a wasteful number, since it uses less digits than its factorization.

1031728930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28133.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1031728930 is about 32120.5375110691. The cubic root of 1031728930 is about 1010.4663826536.

The spelling of 1031728930 in words is "one billion, thirty-one million, seven hundred twenty-eight thousand, nine hundred thirty".