23318191111 has 2 divisors, whose sum is σ = 23318191112. Its totient is φ = 23318191110.

The previous prime is 23318191109. The next prime is 23318191147. The reversal of 23318191111 is 11119181332.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23318191111 - 2¹ = 23318191109 is a prime.

Together with 23318191109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23318191511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11659095555 + 11659095556.

It is an arithmetic number, because the mean of its divisors is an integer number (11659095556).

Almost surely, 2^23318191111 is an apocalyptic number.

23318191111 is a deficient number, since it is larger than the sum of its proper divisors (1).

23318191111 is an equidigital number, since it uses as much as digits as its factorization.

23318191111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 31.

The spelling of 23318191111 in words is "twenty-three billion, three hundred eighteen million, one hundred ninety-one thousand, one hundred eleven".