1131113303 has 4 divisors (see below), whose sum is σ = 1170117240. Its totient is φ = 1092109368.

The previous prime is 1131113281. The next prime is 1131113353. The reversal of 1131113303 is 3033111311.

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 1131113303 - 2⁶ = 1131113239 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 (1131113353) 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, 19501925 + ... + 19501982.

It is an arithmetic number, because the mean of its divisors is an integer number (292529310).

Almost surely, 2^1131113303 is an apocalyptic number.

1131113303 is a deficient number, since it is larger than the sum of its proper divisors (39003937).

1131113303 is an equidigital number, since it uses as much as digits as its factorization.

1131113303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39003936.

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

The square root of 1131113303 is about 33632.0279346934. The cubic root of 1131113303 is about 1041.9223883431.

Adding to 1131113303 its reverse (3033111311), we get a palindrome (4164224614).

The spelling of 1131113303 in words is "one billion, one hundred thirty-one million, one hundred thirteen thousand, three hundred three".