1103243503 has 4 divisors (see below), whose sum is σ = 1114166808. Its totient is φ = 1092320200.

The previous prime is 1103243497. The next prime is 1103243567. The reversal of 1103243503 is 3053423011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3053423011 = 101 ⋅30231911.

It is a cyclic number.

It is not a de Polignac number, because 1103243503 - 2¹³ = 1103235311 is a prime.

It is a super-2 number, since 2×1103243503² = 2434292453823422018, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103243573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5461501 + ... + 5461702.

It is an arithmetic number, because the mean of its divisors is an integer number (278541702).

Almost surely, 2^1103243503 is an apocalyptic number.

1103243503 is a deficient number, since it is larger than the sum of its proper divisors (10923305).

1103243503 is a wasteful number, since it uses less digits than its factorization.

1103243503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923304.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1103243503 is about 33215.1095587535. The cubic root of 1103243503 is about 1033.2937270171.

Adding to 1103243503 its reverse (3053423011), we get a palindrome (4156666514).

The spelling of 1103243503 in words is "one billion, one hundred three million, two hundred forty-three thousand, five hundred three".