1321030243203 has 64 divisors (see below), whose sum is σ = 2159872819200. Its totient is φ = 708707664000.

The previous prime is 1321030243201. The next prime is 1321030243231. The reversal of 1321030243203 is 3023420301231.

It is not a de Polignac number, because 1321030243203 - 2¹ = 1321030243201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321030243201) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 608133 + ... + 1735478.

It is an arithmetic number, because the mean of its divisors is an integer number (33748012800).

Almost surely, 2^{1321030243203} is an apocalyptic number.

1321030243203 is a deficient number, since it is larger than the sum of its proper divisors (838842575997).

1321030243203 is a wasteful number, since it uses less digits than its factorization.

1321030243203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343704.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 1321030243203 its reverse (3023420301231), we get a palindrome (4344450544434).

The spelling of 1321030243203 in words is "one trillion, three hundred twenty-one billion, thirty million, two hundred forty-three thousand, two hundred three".