1103512243 has 8 divisors (see below), whose sum is σ = 1112489840. Its totient is φ = 1094549760.

The previous prime is 1103512237. The next prime is 1103512259. The reversal of 1103512243 is 3422153011.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103512243 is a prime.

It is a super-3 number, since 3×1103512243³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1103512283) 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 in 7 ways as a sum of consecutive naturals, for example, 177223 + ... + 183343.

It is an arithmetic number, because the mean of its divisors is an integer number (139061230).

Almost surely, 2^1103512243 is an apocalyptic number.

1103512243 is a deficient number, since it is larger than the sum of its proper divisors (8977597).

1103512243 is a wasteful number, since it uses less digits than its factorization.

1103512243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7557.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1103512243 is about 33219.1547604691. The cubic root of 1103512243 is about 1033.3776204975.

Adding to 1103512243 its reverse (3422153011), we get a palindrome (4525665254).

The spelling of 1103512243 in words is "one billion, one hundred three million, five hundred twelve thousand, two hundred forty-three".