1121323103 has 4 divisors (see below), whose sum is σ = 1157494848. Its totient is φ = 1085151360.

The previous prime is 1121323097. The next prime is 1121323123. The reversal of 1121323103 is 3013231211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121323103 - 2²² = 1117128799 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 (1121323123) 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, 18085826 + ... + 18085887.

It is an arithmetic number, because the mean of its divisors is an integer number (289373712).

Almost surely, 2^1121323103 is an apocalyptic number.

1121323103 is a deficient number, since it is larger than the sum of its proper divisors (36171745).

1121323103 is an equidigital number, since it uses as much as digits as its factorization.

1121323103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36171744.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1121323103 is about 33486.1628587093. The cubic root of 1121323103 is about 1038.9076001883.

Adding to 1121323103 its reverse (3013231211), we get a palindrome (4134554314).

The spelling of 1121323103 in words is "one billion, one hundred twenty-one million, three hundred twenty-three thousand, one hundred three".