812288013 has 16 divisors (see below), whose sum is σ = 1092020160. Its totient is φ = 537054336.

The previous prime is 812288011. The next prime is 812288021. The reversal of 812288013 is 310882218.

It is not a de Polignac number, because 812288013 - 2¹ = 812288011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812288011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309081 + ... + 311697.

It is an arithmetic number, because the mean of its divisors is an integer number (68251260).

Almost surely, 2^812288013 is an apocalyptic number.

It is an amenable number.

812288013 is a deficient number, since it is larger than the sum of its proper divisors (279732147).

812288013 is a wasteful number, since it uses less digits than its factorization.

812288013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 812288013 is about 28500.6668869344. Note that the first 3 decimals coincide. The cubic root of 812288013 is about 933.0466289308.

The spelling of 812288013 in words is "eight hundred twelve million, two hundred eighty-eight thousand, thirteen".