811031224 has 16 divisors (see below), whose sum is σ = 1523022120. Its totient is φ = 404892000.

The previous prime is 811031191. The next prime is 811031239. The reversal of 811031224 is 422130118.

It is a happy number.

811031224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 811031195 and 811031204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72402 + ... + 82849.

Almost surely, 2^811031224 is an apocalyptic number.

It is an amenable number.

811031224 is a deficient number, since it is larger than the sum of its proper divisors (711990896).

811031224 is a wasteful number, since it uses less digits than its factorization.

811031224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155910 (or 155906 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 811031224 is about 28478.6099379868. The cubic root of 811031224 is about 932.5651707861.

The spelling of 811031224 in words is "eight hundred eleven million, thirty-one thousand, two hundred twenty-four".