1103823 has 18 divisors (see below), whose sum is σ = 1855464. Its totient is φ = 630504.

The previous prime is 1103803. The next prime is 1103849. The reversal of 1103823 is 3283011.

It is not a de Polignac number, because 1103823 - 2¹² = 1099727 is a prime.

1103823 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1103796 and 1103805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103803) 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 17 ways as a sum of consecutive naturals, for example, 811 + ... + 1692.

2^1103823 is an apocalyptic number.

1103823 is a deficient number, since it is larger than the sum of its proper divisors (751641).

1103823 is a wasteful number, since it uses less digits than its factorization.

1103823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2523 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1103823 is about 1050.6298111133. The cubic root of 1103823 is about 103.3474613588.

Adding to 1103823 its reverse (3283011), we get a palindrome (4386834).

The spelling of 1103823 in words is "one million, one hundred three thousand, eight hundred twenty-three".