11518031071 has 2 divisors, whose sum is σ = 11518031072. Its totient is φ = 11518031070.

The previous prime is 11518031017. The next prime is 11518031081. The reversal of 11518031071 is 17013081511.

Together with previous prime (11518031017) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11518031071 - 2¹⁷ = 11517899999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11518031081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5759015535 + 5759015536.

It is an arithmetic number, because the mean of its divisors is an integer number (5759015536).

Almost surely, 2^11518031071 is an apocalyptic number.

11518031071 is a deficient number, since it is larger than the sum of its proper divisors (1).

11518031071 is an equidigital number, since it uses as much as digits as its factorization.

11518031071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 28.

The spelling of 11518031071 in words is "eleven billion, five hundred eighteen million, thirty-one thousand, seventy-one".