20321113208 has 16 divisors (see below), whose sum is σ = 41565913560. Its totient is φ = 9236869600.

The previous prime is 20321113207. The next prime is 20321113283. The reversal of 20321113208 is 80231112302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321113207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115460783 + ... + 115460958.

Almost surely, 2^20321113208 is an apocalyptic number.

It is an amenable number.

20321113208 is an abundant number, since it is smaller than the sum of its proper divisors (21244800352).

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

20321113208 is a wasteful number, since it uses less digits than its factorization.

20321113208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230921758 (or 230921754 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The spelling of 20321113208 in words is "twenty billion, three hundred twenty-one million, one hundred thirteen thousand, two hundred eight".