823128703 has 2 divisors, whose sum is σ = 823128704. Its totient is φ = 823128702.

The previous prime is 823128673. The next prime is 823128727. The reversal of 823128703 is 307821328.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 823128703 - 2⁹ = 823128191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823120703) 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, 411564351 + 411564352.

It is an arithmetic number, because the mean of its divisors is an integer number (411564352).

Almost surely, 2^823128703 is an apocalyptic number.

823128703 is a deficient number, since it is larger than the sum of its proper divisors (1).

823128703 is an equidigital number, since it uses as much as digits as its factorization.

823128703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 823128703 is about 28690.2196401491. The cubic root of 823128703 is about 937.1790723265.

The spelling of 823128703 in words is "eight hundred twenty-three million, one hundred twenty-eight thousand, seven hundred three".