20321313032 has 32 divisors (see below), whose sum is σ = 38404739520. Its totient is φ = 10080225600.

The previous prime is 20321313031. The next prime is 20321313043. The reversal of 20321313032 is 23031312302.

It is a junction number, because it is equal to n+sod(n) for n = 20321312995 and 20321313013.

It is not an unprimeable number, because it can be changed into a prime (20321313031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 952223 + ... + 973329.

It is an arithmetic number, because the mean of its divisors is an integer number (1200148110).

Almost surely, 2^20321313032 is an apocalyptic number.

It is an amenable number.

20321313032 is a deficient number, since it is larger than the sum of its proper divisors (18083426488).

20321313032 is a wasteful number, since it uses less digits than its factorization.

20321313032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22061 (or 22057 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20321313032 its reverse (23031312302), we get a palindrome (43352625334).

The spelling of 20321313032 in words is "twenty billion, three hundred twenty-one million, three hundred thirteen thousand, thirty-two".