1131232303 has 4 divisors (see below), whose sum is σ = 1132776328. Its totient is φ = 1129688280.

The previous prime is 1131232301. The next prime is 1131232351. The reversal of 1131232303 is 3032321311.

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 1131232303 - 2¹ = 1131232301 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 (1131232301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 770913 + ... + 772378.

It is an arithmetic number, because the mean of its divisors is an integer number (283194082).

Almost surely, 2^1131232303 is an apocalyptic number.

1131232303 is a deficient number, since it is larger than the sum of its proper divisors (1544025).

1131232303 is an equidigital number, since it uses as much as digits as its factorization.

1131232303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544024.

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

The square root of 1131232303 is about 33633.7970351252. The cubic root of 1131232303 is about 1041.9589259195.

Adding to 1131232303 its reverse (3032321311), we get a palindrome (4163553614).

The spelling of 1131232303 in words is "one billion, one hundred thirty-one million, two hundred thirty-two thousand, three hundred three".