1131103133 has 4 divisors (see below), whose sum is σ = 1131196320. Its totient is φ = 1131009948.

The previous prime is 1131103123. The next prime is 1131103147. The reversal of 1131103133 is 3313011311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131103133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131103123) 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, 25073 + ... + 53766.

It is an arithmetic number, because the mean of its divisors is an integer number (282799080).

Almost surely, 2^1131103133 is an apocalyptic number.

It is an amenable number.

1131103133 is a deficient number, since it is larger than the sum of its proper divisors (93187).

1131103133 is an equidigital number, since it uses as much as digits as its factorization.

1131103133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93186.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1131103133 is about 33631.8767391890. The cubic root of 1131103133 is about 1041.9192656431.

Adding to 1131103133 its reverse (3313011311), we get a palindrome (4444114444).

The spelling of 1131103133 in words is "one billion, one hundred thirty-one million, one hundred three thousand, one hundred thirty-three".