1103611 has 2 divisors, whose sum is σ = 1103612. Its totient is φ = 1103610.

The previous prime is 1103603. The next prime is 1103617. The reversal of 1103611 is 1163011.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1163011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1103611 - 2³ = 1103603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1103591 and 1103600.

It is not a weakly prime, because it can be changed into another prime (1103617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551805 + 551806.

It is an arithmetic number, because the mean of its divisors is an integer number (551806).

2^1103611 is an apocalyptic number.

1103611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103611 is an equidigital number, since it uses as much as digits as its factorization.

1103611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1103611 is about 1050.5289144045. The cubic root of 1103611 is about 103.3408446384.

Adding to 1103611 its reverse (1163011), we get a palindrome (2266622).

It can be divided in two parts, 110 and 3611, that added together give a square (3721 = 61²).

The spelling of 1103611 in words is "one million, one hundred three thousand, six hundred eleven".