20020323203100 has 432 divisors, whose sum is σ = 71942687456640. Its totient is φ = 4612415270400.

The previous prime is 20020323203071. The next prime is 20020323203131. The reversal of 20020323203100 is 130232302002.

It is a happy number.

20020323203100 is a `hidden beast` number, since 2 + 0 + 0 + 2 + 0 + 32 + 320 + 310 + 0 = 666.

It is a super-2 number, since 2×20020323203100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 in 143 ways as a sum of consecutive naturals, for example, 15115371 + ... + 16386429.

Almost surely, 2^{20020323203100} is an apocalyptic number.

20020323203100 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 20020323203100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35971343728320).

20020323203100 is an abundant number, since it is smaller than the sum of its proper divisors (51922364253540).

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

20020323203100 is a wasteful number, since it uses less digits than its factorization.

20020323203100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271170 (or 1271160 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20020323203100 its reverse (130232302002), we get a palindrome (20150555505102).

The spelling of 20020323203100 in words is "twenty trillion, twenty billion, three hundred twenty-three million, two hundred three thousand, one hundred".