1003323000000 has 784 divisors, whose sum is σ = 3566114353152. Its totient is φ = 248064000000.

The previous prime is 1003322999993. The next prime is 1003323000019. The reversal of 1003323000000 is 3233001.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1003323000000.

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 111 ways as a sum of consecutive naturals, for example, 5252999905 + ... + 5253000095.

Almost surely, 2^{1003323000000} is an apocalyptic number.

1003323000000 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 1003323000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1783057176576).

1003323000000 is an abundant number, since it is smaller than the sum of its proper divisors (2562791353152).

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

1003323000000 is an equidigital number, since it uses as much as digits as its factorization.

1003323000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

Adding to 1003323000000 its reverse (3233001), we get a palindrome (1003326233001).

The spelling of 1003323000000 in words is "one trillion, three billion, three hundred twenty-three million", and thus it is an aban number.