1103111323111 has 4 divisors (see below), whose sum is σ = 1260698654992. Its totient is φ = 945523991232.

The previous prime is 1103111323109. The next prime is 1103111323187. The reversal of 1103111323111 is 1113231113011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1103111323111 - 2¹ = 1103111323109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103111323711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78793665930 + ... + 78793665943.

It is an arithmetic number, because the mean of its divisors is an integer number (315174663748).

Almost surely, 2^{1103111323111} is an apocalyptic number.

1103111323111 is a deficient number, since it is larger than the sum of its proper divisors (157587331881).

1103111323111 is an equidigital number, since it uses as much as digits as its factorization.

1103111323111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157587331880.

The product of its (nonzero) digits is 54, while the sum is 19.

Adding to 1103111323111 its reverse (1113231113011), we get a palindrome (2216342436122).

The spelling of 1103111323111 in words is "one trillion, one hundred three billion, one hundred eleven million, three hundred twenty-three thousand, one hundred eleven".