1103111311 has 4 divisors (see below), whose sum is σ = 1112873472. Its totient is φ = 1093349152.

The previous prime is 1103111299. The next prime is 1103111363. The reversal of 1103111311 is 1131113011.

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 1103111311 - 2¹¹ = 1103109263 is a prime.

It is a super-2 number, since 2×1103111311² = 2433709128912277442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1103111291 and 1103111300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103111381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4880911 + ... + 4881136.

It is an arithmetic number, because the mean of its divisors is an integer number (278218368).

Almost surely, 2^1103111311 is an apocalyptic number.

1103111311 is a deficient number, since it is larger than the sum of its proper divisors (9762161).

1103111311 is an equidigital number, since it uses as much as digits as its factorization.

1103111311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9762160.

The product of its (nonzero) digits is 9, while the sum is 13.

The square root of 1103111311 is about 33213.1195614022. The cubic root of 1103111311 is about 1033.2524551915.

Adding to 1103111311 its reverse (1131113011), we get a palindrome (2234224322).

The spelling of 1103111311 in words is "one billion, one hundred three million, one hundred eleven thousand, three hundred eleven".