1131103 has 2 divisors, whose sum is σ = 1131104. Its totient is φ = 1131102.

The previous prime is 1131083. The next prime is 1131113. The reversal of 1131103 is 3011311.

It is an a-pointer prime, because the next prime (1131113) can be obtained adding 1131103 to its sum of digits (10).

It is a strong prime.

It is an emirp because it is prime and its reverse (3011311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131103 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1131103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565551 + 565552.

It is an arithmetic number, because the mean of its divisors is an integer number (565552).

2^1131103 is an apocalyptic number.

1131103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131103 is an equidigital number, since it uses as much as digits as its factorization.

1131103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 1131103 is about 1063.5332622913. The cubic root of 1131103 is about 104.1919224805.

Adding to 1131103 its reverse (3011311), we get a palindrome (4142414).

The spelling of 1131103 in words is "one million, one hundred thirty-one thousand, one hundred three".