1311333110203 has 2 divisors, whose sum is σ = 1311333110204. Its totient is φ = 1311333110202.

The previous prime is 1311333110179. The next prime is 1311333110233. The reversal of 1311333110203 is 3020113331131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311333110203 - 2¹³ = 1311333102011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311333110233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655666555101 + 655666555102.

It is an arithmetic number, because the mean of its divisors is an integer number (655666555102).

Almost surely, 2^{1311333110203} is an apocalyptic number.

1311333110203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311333110203 is an equidigital number, since it uses as much as digits as its factorization.

1311333110203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 1311333110203 its reverse (3020113331131), we get a palindrome (4331446441334).

The spelling of 1311333110203 in words is "one trillion, three hundred eleven billion, three hundred thirty-three million, one hundred ten thousand, two hundred three".