20321103000 has 768 divisors, whose sum is σ = 76634812800. Its totient is φ = 4460544000.

The previous prime is 20321102993. The next prime is 20321103007. The reversal of 20321103000 is 30112302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20321102993) and next prime (20321103007).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321103007) 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 191 ways as a sum of consecutive naturals, for example, 228326956 + ... + 228327044.

Almost surely, 2^20321103000 is an apocalyptic number.

20321103000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20321103000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38317406400).

20321103000 is an abundant number, since it is smaller than the sum of its proper divisors (56313709800).

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

20321103000 is a wasteful number, since it uses less digits than its factorization.

20321103000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20321103000 its reverse (30112302), we get a palindrome (20351215302).

It can be divided in two parts, 20321 and 103000, that added together give a palindrome (123321).

The spelling of 20321103000 in words is "twenty billion, three hundred twenty-one million, one hundred three thousand".