1311115411 has 2 divisors, whose sum is σ = 1311115412. Its totient is φ = 1311115410.

The previous prime is 1311115409. The next prime is 1311115469. The reversal of 1311115411 is 1145111131.

It is a weak prime.

It is an emirp because it is prime and its reverse (1145111131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311115411 - 2¹ = 1311115409 is a prime.

Together with 1311115409, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1311115811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655557705 + 655557706.

It is an arithmetic number, because the mean of its divisors is an integer number (655557706).

Almost surely, 2^1311115411 is an apocalyptic number.

1311115411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311115411 is an equidigital number, since it uses as much as digits as its factorization.

1311115411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60, while the sum is 19.

The square root of 1311115411 is about 36209.3276794806. The cubic root of 1311115411 is about 1094.4946441737.

Adding to 1311115411 its reverse (1145111131), we get a palindrome (2456226542).

The spelling of 1311115411 in words is "one billion, three hundred eleven million, one hundred fifteen thousand, four hundred eleven".