1103043001 has 6 divisors (see below), whose sum is σ = 1133662110. Its totient is φ = 1073229696.

The previous prime is 1103042999. The next prime is 1103043013. The reversal of 1103043001 is 1003403011.

It can be written as a sum of positive squares in 3 ways, for example, as 822312976 + 280730025 = 28676^2 + 16755^2 .

It is not a de Polignac number, because 1103043001 - 2¹ = 1103042999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103043031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 401496 + ... + 404233.

It is an arithmetic number, because the mean of its divisors is an integer number (188943685).

Almost surely, 2^1103043001 is an apocalyptic number.

It is an amenable number.

1103043001 is a deficient number, since it is larger than the sum of its proper divisors (30619109).

1103043001 is an frugal number, since it uses more digits than its factorization.

1103043001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805803 (or 805766 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1103043001 is about 33212.0911867952. The cubic root of 1103043001 is about 1033.2311267509.

Adding to 1103043001 its reverse (1003403011), we get a palindrome (2106446012).

The spelling of 1103043001 in words is "one billion, one hundred three million, forty-three thousand, one".