1131233133 has 4 divisors (see below), whose sum is σ = 1508310848. Its totient is φ = 754155420.

The previous prime is 1131233119. The next prime is 1131233141. The reversal of 1131233133 is 3313321311.

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.

It is not a de Polignac number, because 1131233133 - 2⁵ = 1131233101 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 (1131233143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188538853 + ... + 188538858.

It is an arithmetic number, because the mean of its divisors is an integer number (377077712).

Almost surely, 2^1131233133 is an apocalyptic number.

It is an amenable number.

1131233133 is a deficient number, since it is larger than the sum of its proper divisors (377077715).

1131233133 is an equidigital number, since it uses as much as digits as its factorization.

1131233133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377077714.

The product of its digits is 486, while the sum is 21.

The square root of 1131233133 is about 33633.8093739023. The cubic root of 1131233133 is about 1041.9591807524.

Adding to 1131233133 its reverse (3313321311), we get a palindrome (4444554444).

The spelling of 1131233133 in words is "one billion, one hundred thirty-one million, two hundred thirty-three thousand, one hundred thirty-three".