1311101010187 has 2 divisors, whose sum is σ = 1311101010188. Its totient is φ = 1311101010186.

The previous prime is 1311101010173. The next prime is 1311101010257. The reversal of 1311101010187 is 7810101011131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1311101010187 - 2¹⁹ = 1311100485899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1311101010157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655550505093 + 655550505094.

It is an arithmetic number, because the mean of its divisors is an integer number (655550505094).

Almost surely, 2^{1311101010187} is an apocalyptic number.

1311101010187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1311101010187 is an equidigital number, since it uses as much as digits as its factorization.

1311101010187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 25.

The spelling of 1311101010187 in words is "one trillion, three hundred eleven billion, one hundred one million, ten thousand, one hundred eighty-seven".