1311819651011 has 2 divisors, whose sum is σ = 1311819651012. Its totient is φ = 1311819651010.

The previous prime is 1311819650987. The next prime is 1311819651017. The reversal of 1311819651011 is 1101569181131.

It is a strong prime.

It is an emirp because it is prime and its reverse (1101569181131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311819651011 - 2¹⁴ = 1311819634627 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311819651017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655909825505 + 655909825506.

It is an arithmetic number, because the mean of its divisors is an integer number (655909825506).

Almost surely, 2^{1311819651011} is an apocalyptic number.

1311819651011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311819651011 is an equidigital number, since it uses as much as digits as its factorization.

1311819651011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 38.

The spelling of 1311819651011 in words is "one trillion, three hundred eleven billion, eight hundred nineteen million, six hundred fifty-one thousand, eleven".