20003123003100 has 144 divisors (see below), whose sum is σ = 61875110239488. Its totient is φ = 4971649858560.

The previous prime is 20003123003093. The next prime is 20003123003131. The reversal of 20003123003100 is 130032130002.

It is a super-2 number, since 2×20003123003100² (a number of 27 digits) contains 22 as substring.

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 20003123003100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18514414 + ... + 19565013.

It is an arithmetic number, because the mean of its divisors is an integer number (429688265552).

Almost surely, 2^{20003123003100} is an apocalyptic number.

20003123003100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20003123003100 is an abundant number, since it is smaller than the sum of its proper divisors (41871987236388).

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

20003123003100 is a wasteful number, since it uses less digits than its factorization.

20003123003100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38079564 (or 38079557 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20003123003100 its reverse (130032130002), we get a palindrome (20133155133102).

The spelling of 20003123003100 in words is "twenty trillion, three billion, one hundred twenty-three million, three thousand, one hundred".