28716031723 has 2 divisors, whose sum is σ = 28716031724. Its totient is φ = 28716031722.

The previous prime is 28716031711. The next prime is 28716031741. The reversal of 28716031723 is 32713061782.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28716031723 is a prime.

It is a super-2 number, since 2×28716031723² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28716031703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14358015861 + 14358015862.

It is an arithmetic number, because the mean of its divisors is an integer number (14358015862).

Almost surely, 2^28716031723 is an apocalyptic number.

28716031723 is a deficient number, since it is larger than the sum of its proper divisors (1).

28716031723 is an equidigital number, since it uses as much as digits as its factorization.

28716031723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The spelling of 28716031723 in words is "twenty-eight billion, seven hundred sixteen million, thirty-one thousand, seven hundred twenty-three".