820318012 has 24 divisors (see below), whose sum is σ = 1489118400. Its totient is φ = 394933056.

The previous prime is 820318003. The next prime is 820318013. The reversal of 820318012 is 210813028.

820318012 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 (820318013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33789 + ... + 52747.

It is an arithmetic number, because the mean of its divisors is an integer number (62046600).

Almost surely, 2^820318012 is an apocalyptic number.

It is an amenable number.

820318012 is a deficient number, since it is larger than the sum of its proper divisors (668800388).

820318012 is a wasteful number, since it uses less digits than its factorization.

820318012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19365 (or 19363 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 820318012 is about 28641.1943186732. The cubic root of 820318012 is about 936.1111450917. Note that the first 4 decimals are identical.

The spelling of 820318012 in words is "eight hundred twenty million, three hundred eighteen thousand, twelve".