812944731 has 16 divisors (see below), whose sum is σ = 1091600928. Its totient is φ = 538137600.

The previous prime is 812944673. The next prime is 812944753. The reversal of 812944731 is 137449218.

812944731 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 812944731 - 2⁷ = 812944603 is a prime.

It is a super-2 number, since 2×812944731² = 1321758271321324722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 812944731.

It is not an unprimeable number, because it can be changed into a prime (812944831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389611 + ... + 391691.

It is an arithmetic number, because the mean of its divisors is an integer number (68225058).

Almost surely, 2^812944731 is an apocalyptic number.

812944731 is a deficient number, since it is larger than the sum of its proper divisors (278656197).

812944731 is a wasteful number, since it uses less digits than its factorization.

812944731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942.

The product of its digits is 48384, while the sum is 39.

The square root of 812944731 is about 28512.1856580656. The cubic root of 812944731 is about 933.2980108089.

The spelling of 812944731 in words is "eight hundred twelve million, nine hundred forty-four thousand, seven hundred thirty-one".