20312320324 has 12 divisors (see below), whose sum is σ = 37637534844. Its totient is φ = 9558738944.

The previous prime is 20312320313. The next prime is 20312320337. The reversal of 20312320324 is 42302321302.

It can be written as a sum of positive squares in 2 ways, for example, as 12103960324 + 8208360000 = 110018^2 + 90600^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20312320295 and 20312320304.

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 3 ways as a sum of consecutive naturals, for example, 149355229 + ... + 149355364.

It is an arithmetic number, because the mean of its divisors is an integer number (3136461237).

Almost surely, 2^20312320324 is an apocalyptic number.

It is an amenable number.

20312320324 is a deficient number, since it is larger than the sum of its proper divisors (17325214520).

20312320324 is a wasteful number, since it uses less digits than its factorization.

20312320324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298710614 (or 298710612 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20312320324 its reverse (42302321302), we get a palindrome (62614641626).

The spelling of 20312320324 in words is "twenty billion, three hundred twelve million, three hundred twenty thousand, three hundred twenty-four".