1121313103 has 4 divisors (see below), whose sum is σ = 1142470008. Its totient is φ = 1100156200.

The previous prime is 1121313091. The next prime is 1121313119. The reversal of 1121313103 is 3013131211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3013131211 = 31 ⋅97197781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121313103 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 (1121310103) 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, 10578373 + ... + 10578478.

It is an arithmetic number, because the mean of its divisors is an integer number (285617502).

Almost surely, 2^1121313103 is an apocalyptic number.

1121313103 is a deficient number, since it is larger than the sum of its proper divisors (21156905).

1121313103 is an equidigital number, since it uses as much as digits as its factorization.

1121313103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21156904.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1121313103 is about 33486.0135429704. The cubic root of 1121313103 is about 1038.9045118406.

Adding to 1121313103 its reverse (3013131211), we get a palindrome (4134444314).

The spelling of 1121313103 in words is "one billion, one hundred twenty-one million, three hundred thirteen thousand, one hundred three".