816306931812 has 48 divisors (see below), whose sum is σ = 1915020696960. Its totient is φ = 270633934848.

The previous prime is 816306931799. The next prime is 816306931841. The reversal of 816306931812 is 218139603618.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1537764 + ... + 1999332.

It is an arithmetic number, because the mean of its divisors is an integer number (39896264520).

Almost surely, 2^816306931812 is an apocalyptic number.

It is an amenable number.

816306931812 is an abundant number, since it is smaller than the sum of its proper divisors (1098713765148).

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

816306931812 is a wasteful number, since it uses less digits than its factorization.

816306931812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462372 (or 462370 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 816306931812 in words is "eight hundred sixteen billion, three hundred six million, nine hundred thirty-one thousand, eight hundred twelve".