1311202110203 has 16 divisors (see below), whose sum is σ = 1334183724000. Its totient is φ = 1288461430272.

The previous prime is 1311202110191. The next prime is 1311202110209. The reversal of 1311202110203 is 3020112021131.

It is a cyclic number.

It is not a de Polignac number, because 1311202110203 - 2⁴ = 1311202110187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311202110209) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6491843 + ... + 6690771.

It is an arithmetic number, because the mean of its divisors is an integer number (83386482750).

Almost surely, 2^{1311202110203} is an apocalyptic number.

1311202110203 is a deficient number, since it is larger than the sum of its proper divisors (22981613797).

1311202110203 is a wasteful number, since it uses less digits than its factorization.

1311202110203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199534.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1311202110203 its reverse (3020112021131), we get a palindrome (4331314131334).

The spelling of 1311202110203 in words is "one trillion, three hundred eleven billion, two hundred two million, one hundred ten thousand, two hundred three".