1311033223187 has 2 divisors, whose sum is σ = 1311033223188. Its totient is φ = 1311033223186.

The previous prime is 1311033223081. The next prime is 1311033223189. The reversal of 1311033223187 is 7813223301131.

It is a strong prime.

It is an emirp because it is prime and its reverse (7813223301131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1311033223187 - 2²⁴ = 1311016445971 is a prime.

It is a super-2 number, since 2×1311033223187² (a number of 25 digits) contains 22 as substring.

Together with 1311033223189, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1311033223189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655516611593 + 655516611594.

It is an arithmetic number, because the mean of its divisors is an integer number (655516611594).

Almost surely, 2^{1311033223187} is an apocalyptic number.

1311033223187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311033223187 is an equidigital number, since it uses as much as digits as its factorization.

1311033223187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 1311033223187 in words is "one trillion, three hundred eleven billion, thirty-three million, two hundred twenty-three thousand, one hundred eighty-seven".