1069728631 has 2 divisors, whose sum is σ = 1069728632. Its totient is φ = 1069728630.

The previous prime is 1069728619. The next prime is 1069728659. The reversal of 1069728631 is 1368279601.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1069728631 - 2⁵ = 1069728599 is a prime.

It is a super-3 number, since 3×1069728631³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1069728431) 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, 534864315 + 534864316.

It is an arithmetic number, because the mean of its divisors is an integer number (534864316).

Almost surely, 2^1069728631 is an apocalyptic number.

1069728631 is a deficient number, since it is larger than the sum of its proper divisors (1).

1069728631 is an equidigital number, since it uses as much as digits as its factorization.

1069728631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1069728631 is about 32706.7062083604. The cubic root of 1069728631 is about 1022.7226475777.

The spelling of 1069728631 in words is "one billion, sixty-nine million, seven hundred twenty-eight thousand, six hundred thirty-one".