20312321312 has 48 divisors (see below), whose sum is σ = 40490150400. Its totient is φ = 10029884160.

The previous prime is 20312321287. The next prime is 20312321371. The reversal of 20312321312 is 21312321302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 837614 + ... + 861522.

It is an arithmetic number, because the mean of its divisors is an integer number (843544800).

Almost surely, 2^20312321312 is an apocalyptic number.

It is an amenable number.

20312321312 is a deficient number, since it is larger than the sum of its proper divisors (20177829088).

20312321312 is a wasteful number, since it uses less digits than its factorization.

20312321312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24249 (or 24241 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20312321312 its reverse (21312321302), we get a palindrome (41624642614).

The spelling of 20312321312 in words is "twenty billion, three hundred twelve million, three hundred twenty-one thousand, three hundred twelve".