11111717311 has 2 divisors, whose sum is σ = 11111717312. Its totient is φ = 11111717310.

The previous prime is 11111717273. The next prime is 11111717329. The reversal of 11111717311 is 11371711111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111717311 - 2⁹ = 11111716799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111517311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555858655 + 5555858656.

It is an arithmetic number, because the mean of its divisors is an integer number (5555858656).

Almost surely, 2^11111717311 is an apocalyptic number.

11111717311 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111717311 is an equidigital number, since it uses as much as digits as its factorization.

11111717311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147, while the sum is 25.

The spelling of 11111717311 in words is "eleven billion, one hundred eleven million, seven hundred seventeen thousand, three hundred eleven".