806947831 has 2 divisors, whose sum is σ = 806947832. Its totient is φ = 806947830.

The previous prime is 806947807. The next prime is 806947903. The reversal of 806947831 is 138749608.

It is a happy number.

806947831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 806947831 - 2⁷ = 806947703 is a prime.

It is a super-2 number, since 2×806947831² = 1302329603911209122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (806947231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 403473915 + 403473916.

It is an arithmetic number, because the mean of its divisors is an integer number (403473916).

Almost surely, 2^806947831 is an apocalyptic number.

806947831 is a deficient number, since it is larger than the sum of its proper divisors (1).

806947831 is an equidigital number, since it uses as much as digits as its factorization.

806947831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 806947831 is about 28406.8271899556. The cubic root of 806947831 is about 930.9974387333.

The spelling of 806947831 in words is "eight hundred six million, nine hundred forty-seven thousand, eight hundred thirty-one".