1131043203 has 16 divisors (see below), whose sum is σ = 1711272960. Its totient is φ = 737984808.

The previous prime is 1131043159. The next prime is 1131043211. The reversal of 1131043203 is 3023401311.

It is not a de Polignac number, because 1131043203 - 2¹⁰ = 1131042179 is a prime.

It is a super-3 number, since 3×1131043203³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1131043213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444375 + ... + 446912.

It is an arithmetic number, because the mean of its divisors is an integer number (106954560).

Almost surely, 2^1131043203 is an apocalyptic number.

1131043203 is a deficient number, since it is larger than the sum of its proper divisors (580229757).

1131043203 is an equidigital number, since it uses as much as digits as its factorization.

1131043203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891343 (or 891337 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1131043203 is about 33630.9857571853. The cubic root of 1131043203 is about 1041.9008637478.

Adding to 1131043203 its reverse (3023401311), we get a palindrome (4154444514).

The spelling of 1131043203 in words is "one billion, one hundred thirty-one million, forty-three thousand, two hundred three".