808821311 has 8 divisors (see below), whose sum is σ = 817317600. Its totient is φ = 800344800.

The previous prime is 808821283. The next prime is 808821331. The reversal of 808821311 is 113128808.

It is a happy number.

808821311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 808821311 - 2²² = 804627007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808821331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85886 + ... + 94836.

It is an arithmetic number, because the mean of its divisors is an integer number (102164700).

Almost surely, 2^808821311 is an apocalyptic number.

808821311 is a deficient number, since it is larger than the sum of its proper divisors (8496289).

808821311 is a wasteful number, since it uses less digits than its factorization.

808821311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9889.

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 808821311 is about 28439.7839478432. The cubic root of 808821311 is about 931.7173766361.

The spelling of 808821311 in words is "eight hundred eight million, eight hundred twenty-one thousand, three hundred eleven".