1311133203101 has 2 divisors, whose sum is σ = 1311133203102. Its totient is φ = 1311133203100.

The previous prime is 1311133202947. The next prime is 1311133203109. The reversal of 1311133203101 is 1013023311131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 913916880100 + 397216323001 = 955990^2 + 630251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311133203101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1311133203109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655566601550 + 655566601551.

It is an arithmetic number, because the mean of its divisors is an integer number (655566601551).

Almost surely, 2^{1311133203101} is an apocalyptic number.

It is an amenable number.

1311133203101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311133203101 is an equidigital number, since it uses as much as digits as its factorization.

1311133203101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 1311133203101 its reverse (1013023311131), we get a palindrome (2324156514232).

The spelling of 1311133203101 in words is "one trillion, three hundred eleven billion, one hundred thirty-three million, two hundred three thousand, one hundred one".