1131303203 has 2 divisors, whose sum is σ = 1131303204. Its totient is φ = 1131303202.

The previous prime is 1131303191. The next prime is 1131303209. The reversal of 1131303203 is 3023031311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1131303203 - 2³⁰ = 57561379 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1131303209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565651601 + 565651602.

It is an arithmetic number, because the mean of its divisors is an integer number (565651602).

Almost surely, 2^1131303203 is an apocalyptic number.

1131303203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131303203 is an equidigital number, since it uses as much as digits as its factorization.

1131303203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 1131303203 is about 33634.8510179546. The cubic root of 1131303203 is about 1041.9806937281.

Adding to 1131303203 its reverse (3023031311), we get a palindrome (4154334514).

The spelling of 1131303203 in words is "one billion, one hundred thirty-one million, three hundred three thousand, two hundred three".