20213233232 has 10 divisors (see below), whose sum is σ = 39163139418. Its totient is φ = 10106616608.

The previous prime is 20213233193. The next prime is 20213233253. The reversal of 20213233232 is 23233231202.

It can be written as a sum of positive squares in only one way, i.e., 15184154176 + 5029079056 = 123224^2 + 70916^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20213233198 and 20213233207.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 631663523 + ... + 631663554.

Almost surely, 2^20213233232 is an apocalyptic number.

It is an amenable number.

20213233232 is a deficient number, since it is larger than the sum of its proper divisors (18949906186).

20213233232 is a wasteful number, since it uses less digits than its factorization.

20213233232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263327085 (or 1263327079 counting only the distinct ones).

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

Adding to 20213233232 its reverse (23233231202), we get a palindrome (43446464434).

The spelling of 20213233232 in words is "twenty billion, two hundred thirteen million, two hundred thirty-three thousand, two hundred thirty-two".