1121323303 has 4 divisors (see below), whose sum is σ = 1121402848. Its totient is φ = 1121243760.

The previous prime is 1121323297. The next prime is 1121323319. The reversal of 1121323303 is 3033231211.

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 1121323303 - 2¹⁷ = 1121192231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121323403) 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 3 ways as a sum of consecutive naturals, for example, 12303 + ... + 48928.

It is an arithmetic number, because the mean of its divisors is an integer number (280350712).

Almost surely, 2^1121323303 is an apocalyptic number.

1121323303 is a deficient number, since it is larger than the sum of its proper divisors (79545).

1121323303 is an equidigital number, since it uses as much as digits as its factorization.

1121323303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79544.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1121323303 is about 33486.1658450173. The cubic root of 1121323303 is about 1038.9076619551.

Adding to 1121323303 its reverse (3033231211), we get a palindrome (4154554514).

The spelling of 1121323303 in words is "one billion, one hundred twenty-one million, three hundred twenty-three thousand, three hundred three".