1028304731 has 2 divisors, whose sum is σ = 1028304732. Its totient is φ = 1028304730.

The previous prime is 1028304727. The next prime is 1028304787. The reversal of 1028304731 is 1374038201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1028304731 - 2² = 1028304727 is a prime.

It is a super-2 number, since 2×1028304731² = 2114821239593964722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1028304694 and 1028304703.

It is not a weakly prime, because it can be changed into another prime (1028300731) 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 as a sum of consecutive naturals, namely, 514152365 + 514152366.

It is an arithmetic number, because the mean of its divisors is an integer number (514152366).

Almost surely, 2^1028304731 is an apocalyptic number.

1028304731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028304731 is an equidigital number, since it uses as much as digits as its factorization.

1028304731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 1028304731 is about 32067.1908810236. The cubic root of 1028304731 is about 1009.3472667105.

The spelling of 1028304731 in words is "one billion, twenty-eight million, three hundred four thousand, seven hundred thirty-one".