1121344403 has 4 divisors (see below), whose sum is σ = 1121444640. Its totient is φ = 1121244168.

The previous prime is 1121344391. The next prime is 1121344409. The reversal of 1121344403 is 3044431211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1121344403 - 2¹² = 1121340307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121344409) 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, 30875 + ... + 56532.

It is an arithmetic number, because the mean of its divisors is an integer number (280361160).

Almost surely, 2^1121344403 is an apocalyptic number.

1121344403 is a deficient number, since it is larger than the sum of its proper divisors (100237).

1121344403 is an equidigital number, since it uses as much as digits as its factorization.

1121344403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100236.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1121344403 is about 33486.4808990136. The cubic root of 1121344403 is about 1038.9141783077.

Adding to 1121344403 its reverse (3044431211), we get a palindrome (4165775614).

The spelling of 1121344403 in words is "one billion, one hundred twenty-one million, three hundred forty-four thousand, four hundred three".