1103603623 has 4 divisors (see below), whose sum is σ = 1119147408. Its totient is φ = 1088059840.

The previous prime is 1103603621. The next prime is 1103603713. The reversal of 1103603623 is 3263063011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1103603623 - 2¹ = 1103603621 is a prime.

It is a super-2 number, since 2×1103603623² = 2435881913397452258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103603621) 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 3 ways as a sum of consecutive naturals, for example, 7771786 + ... + 7771927.

It is an arithmetic number, because the mean of its divisors is an integer number (279786852).

Almost surely, 2^1103603623 is an apocalyptic number.

1103603623 is a deficient number, since it is larger than the sum of its proper divisors (15543785).

1103603623 is an equidigital number, since it uses as much as digits as its factorization.

1103603623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15543784.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 1103603623 is about 33220.5301432713. The cubic root of 1103603623 is about 1033.4061438000.

Adding to 1103603623 its reverse (3263063011), we get a palindrome (4366666634).

The spelling of 1103603623 in words is "one billion, one hundred three million, six hundred three thousand, six hundred twenty-three".