812305230 has 128 divisors (see below), whose sum is σ = 2201665536. Its totient is φ = 190108800.

The previous prime is 812305229. The next prime is 812305231. The reversal of 812305230 is 32503218.

812305230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (812305229) and next prime (812305231).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 812305230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812305231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1287015 + ... + 1287645.

It is an arithmetic number, because the mean of its divisors is an integer number (17200512).

Almost surely, 2^812305230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812305230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1100832768).

812305230 is an abundant number, since it is smaller than the sum of its proper divisors (1389360306).

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

812305230 is a wasteful number, since it uses less digits than its factorization.

812305230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 812305230 is about 28500.9689308978. The cubic root of 812305230 is about 933.0532210714.

Adding to 812305230 its reverse (32503218), we get a palindrome (844808448).

The spelling of 812305230 in words is "eight hundred twelve million, three hundred five thousand, two hundred thirty".