811100133 has 12 divisors (see below), whose sum is σ = 1173419520. Its totient is φ = 539888616.

The previous prime is 811100131. The next prime is 811100137. The reversal of 811100133 is 331001118.

It is a happy number.

811100133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 811100133 - 2¹ = 811100131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811100131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64293 + ... + 75866.

It is an arithmetic number, because the mean of its divisors is an integer number (97784960).

Almost surely, 2^811100133 is an apocalyptic number.

It is an amenable number.

811100133 is a deficient number, since it is larger than the sum of its proper divisors (362319387).

811100133 is a wasteful number, since it uses less digits than its factorization.

811100133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140808 (or 140805 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 811100133 is about 28479.8197501318. The cubic root of 811100133 is about 932.5915817353.

The spelling of 811100133 in words is "eight hundred eleven million, one hundred thousand, one hundred thirty-three".