1003123204100 has 72 divisors (see below), whose sum is σ = 2306809417248. Its totient is φ = 377320921600.

The previous prime is 1003123204081. The next prime is 1003123204103. The reversal of 1003123204100 is 14023213001.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1003123204103) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1723415 + ... + 2230785.

It is an arithmetic number, because the mean of its divisors is an integer number (32039019684).

Almost surely, 2^{1003123204100} is an apocalyptic number.

1003123204100 is a gapful number since it is divisible by the number (10) 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 1003123204100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1153404708624).

1003123204100 is an abundant number, since it is smaller than the sum of its proper divisors (1303686213148).

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

1003123204100 is a wasteful number, since it uses less digits than its factorization.

1003123204100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508565 (or 508558 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1003123204100 its reverse (14023213001), we get a palindrome (1017146417101).

The spelling of 1003123204100 in words is "one trillion, three billion, one hundred twenty-three million, two hundred four thousand, one hundred".