20323211100 has 36 divisors (see below), whose sum is σ = 58801824984. Its totient is φ = 5419522880.

The previous prime is 20323211081. The next prime is 20323211101. The reversal of 20323211100 is 111232302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20323211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323211101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33871719 + ... + 33872318.

Almost surely, 2^20323211100 is an apocalyptic number.

20323211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20323211100 is an abundant number, since it is smaller than the sum of its proper divisors (38478613884).

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

20323211100 is a wasteful number, since it uses less digits than its factorization.

20323211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67744054 (or 67744047 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20323211100 its reverse (111232302), we get a palindrome (20434443402).

The spelling of 20323211100 in words is "twenty billion, three hundred twenty-three million, two hundred eleven thousand, one hundred".