1311102811 has 2 divisors, whose sum is σ = 1311102812. Its totient is φ = 1311102810.

The previous prime is 1311102799. The next prime is 1311102853. The reversal of 1311102811 is 1182011131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311102811 - 2²⁵ = 1277548379 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311100811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655551405 + 655551406.

It is an arithmetic number, because the mean of its divisors is an integer number (655551406).

Almost surely, 2^1311102811 is an apocalyptic number.

1311102811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311102811 is an equidigital number, since it uses as much as digits as its factorization.

1311102811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

The square root of 1311102811 is about 36209.1536907451. The cubic root of 1311102811 is about 1094.4911380809.

Adding to 1311102811 its reverse (1182011131), we get a palindrome (2493113942).

The spelling of 1311102811 in words is "one billion, three hundred eleven million, one hundred two thousand, eight hundred eleven".