1103344021 has 4 divisors (see below), whose sum is σ = 1188216652. Its totient is φ = 1018471392.

The previous prime is 1103344019. The next prime is 1103344037. The reversal of 1103344021 is 1204433011.

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

It can be written as a sum of positive squares in 2 ways, for example, as 398441521 + 704902500 = 19961^2 + 26550^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103344021 - 2¹ = 1103344019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1103344021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103344051) 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, 42436296 + ... + 42436321.

It is an arithmetic number, because the mean of its divisors is an integer number (297054163).

Almost surely, 2^1103344021 is an apocalyptic number.

It is an amenable number.

1103344021 is a deficient number, since it is larger than the sum of its proper divisors (84872631).

1103344021 is an equidigital number, since it uses as much as digits as its factorization.

1103344021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84872630.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1103344021 is about 33216.6226609509. The cubic root of 1103344021 is about 1033.3251076580.

Adding to 1103344021 its reverse (1204433011), we get a palindrome (2307777032).

The spelling of 1103344021 in words is "one billion, one hundred three million, three hundred forty-four thousand, twenty-one".