20030321321300 has 72 divisors (see below), whose sum is σ = 44180848854072. Its totient is φ = 7880336640000.

The previous prime is 20030321321287. The next prime is 20030321321359. The reversal of 20030321321300 is 312312303002.

It can be written as a sum of positive squares in 12 ways, for example, as 19888014321604 + 142306999696 = 4459598^2 + 377236^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120703184 + ... + 120869016.

It is an arithmetic number, because the mean of its divisors is an integer number (613622900751).

Almost surely, 2^{20030321321300} is an apocalyptic number.

20030321321300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20030321321300 is an abundant number, since it is smaller than the sum of its proper divisors (24150527532772).

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

20030321321300 is a wasteful number, since it uses less digits than its factorization.

20030321321300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185709 (or 185702 counting only the distinct ones).

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

Adding to 20030321321300 its reverse (312312303002), we get a palindrome (20342633624302).

The spelling of 20030321321300 in words is "twenty trillion, thirty billion, three hundred twenty-one million, three hundred twenty-one thousand, three hundred".