20321233232 has 10 divisors (see below), whose sum is σ = 39372389418. Its totient is φ = 10160616608.

The previous prime is 20321233199. The next prime is 20321233259. The reversal of 20321233232 is 23233212302.

It can be written as a sum of positive squares in only one way, i.e., 17762492176 + 2558741056 = 133276^2 + 50584^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20321233198 and 20321233207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 635038523 + ... + 635038554.

Almost surely, 2^20321233232 is an apocalyptic number.

It is an amenable number.

20321233232 is a deficient number, since it is larger than the sum of its proper divisors (19051156186).

20321233232 is a wasteful number, since it uses less digits than its factorization.

20321233232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270077085 (or 1270077079 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 20321233232 its reverse (23233212302), we get a palindrome (43554445534).

The spelling of 20321233232 in words is "twenty billion, three hundred twenty-one million, two hundred thirty-three thousand, two hundred thirty-two".