1103811 has 8 divisors (see below), whose sum is σ = 1478400. Its totient is φ = 732552.

The previous prime is 1103803. The next prime is 1103849. The reversal of 1103811 is 1183011.

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

It is not a de Polignac number, because 1103811 - 2³ = 1103803 is a prime.

1103811 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1103111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90 + ... + 1488.

It is an arithmetic number, because the mean of its divisors is an integer number (184800).

2^1103811 is an apocalyptic number.

1103811 is a deficient number, since it is larger than the sum of its proper divisors (374589).

1103811 is a wasteful number, since it uses less digits than its factorization.

1103811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1103811 is about 1050.6241002376. The cubic root of 1103811 is about 103.3470868501.

Adding to 1103811 its reverse (1183011), we get a palindrome (2286822).

The spelling of 1103811 in words is "one million, one hundred three thousand, eight hundred eleven".