1103112131111 has 8 divisors (see below), whose sum is σ = 1105276333344. Its totient is φ = 1100949426720.

The previous prime is 1103112131057. The next prime is 1103112131183. The reversal of 1103112131111 is 1111312113011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1103112131111 - 2¹⁸ = 1103111868967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1103112131111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103112131311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1105646 + ... + 1851668.

It is an arithmetic number, because the mean of its divisors is an integer number (138159541668).

Almost surely, 2^{1103112131111} is an apocalyptic number.

1103112131111 is a deficient number, since it is larger than the sum of its proper divisors (2164202233).

1103112131111 is an equidigital number, since it uses as much as digits as its factorization.

1103112131111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748921.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 1103112131111 its reverse (1111312113011), we get a palindrome (2214424244122).

It can be divided in two parts, 110311 and 2131111, that added together give a palindrome (2241422).

The spelling of 1103112131111 in words is "one trillion, one hundred three billion, one hundred twelve million, one hundred thirty-one thousand, one hundred eleven".