1103205443 has 4 divisors (see below), whose sum is σ = 1141247040. Its totient is φ = 1065163848.

The previous prime is 1103205437. The next prime is 1103205449. The reversal of 1103205443 is 3445023011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3445023011 = 11369 ⋅303019.

It is an interprime number because it is at equal distance from previous prime (1103205437) and next prime (1103205449).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103205443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103205449) 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, 19020755 + ... + 19020812.

It is an arithmetic number, because the mean of its divisors is an integer number (285311760).

Almost surely, 2^1103205443 is an apocalyptic number.

1103205443 is a deficient number, since it is larger than the sum of its proper divisors (38041597).

1103205443 is an equidigital number, since it uses as much as digits as its factorization.

1103205443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38041596.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1103205443 is about 33214.5366217866. The cubic root of 1103205443 is about 1033.2818445960.

Adding to 1103205443 its reverse (3445023011), we get a palindrome (4548228454).

The spelling of 1103205443 in words is "one billion, one hundred three million, two hundred five thousand, four hundred forty-three".