812906831028 has 48 divisors (see below), whose sum is σ = 2008606844160. Its totient is φ = 254998001664.

The previous prime is 812906831017. The next prime is 812906831029. The reversal of 812906831028 is 820138609218.

812906831028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812906831029) 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, 1431925 + ... + 1917347.

It is an arithmetic number, because the mean of its divisors is an integer number (41845975920).

Almost surely, 2^812906831028 is an apocalyptic number.

It is an amenable number.

812906831028 is an abundant number, since it is smaller than the sum of its proper divisors (1195700013132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812906831028 is a wasteful number, since it uses less digits than its factorization.

812906831028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493656 (or 493654 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The spelling of 812906831028 in words is "eight hundred twelve billion, nine hundred six million, eight hundred thirty-one thousand, twenty-eight".