22031230312 has 64 divisors (see below), whose sum is σ = 50864325120. Its totient is φ = 8711705088.

The previous prime is 22031230289. The next prime is 22031230327. The reversal of 22031230312 is 21303213022.

It is a self number, because there is not a number n which added to its sum of digits gives 22031230312.

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, 2008908 + ... + 2019844.

It is an arithmetic number, because the mean of its divisors is an integer number (794755080).

Almost surely, 2^22031230312 is an apocalyptic number.

It is an amenable number.

22031230312 is an abundant number, since it is smaller than the sum of its proper divisors (28833094808).

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

22031230312 is a wasteful number, since it uses less digits than its factorization.

22031230312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13730 (or 13726 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 22031230312 its reverse (21303213022), we get a palindrome (43334443334).

The spelling of 22031230312 in words is "twenty-two billion, thirty-one million, two hundred thirty thousand, three hundred twelve".