1100203001323 has 16 divisors (see below), whose sum is σ = 1179055699200. Its totient is φ = 1024288328800.

The previous prime is 1100203001309. The next prime is 1100203001327. The reversal of 1100203001323 is 3231003020011.

It is a cyclic number.

It is not a de Polignac number, because 1100203001323 - 2⁵ = 1100203001291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100203001297 and 1100203001306.

It is not an unprimeable number, because it can be changed into a prime (1100203001327) 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 15 ways as a sum of consecutive naturals, for example, 3876613 + ... + 4150726.

It is an arithmetic number, because the mean of its divisors is an integer number (73690981200).

Almost surely, 2^{1100203001323} is an apocalyptic number.

1100203001323 is a deficient number, since it is larger than the sum of its proper divisors (78852697877).

1100203001323 is a wasteful number, since it uses less digits than its factorization.

1100203001323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8027522.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 1100203001323 its reverse (3231003020011), we get a palindrome (4331206021334).

The spelling of 1100203001323 in words is "one trillion, one hundred billion, two hundred three million, one thousand, three hundred twenty-three".