1131233433 has 16 divisors (see below), whose sum is σ = 1645996800. Its totient is φ = 685360080.

The previous prime is 1131233429. The next prime is 1131233443. The reversal of 1131233433 is 3343321311.

It is a happy number.

It is not a de Polignac number, because 1131233433 - 2² = 1131233429 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1131233413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167598 + ... + 174216.

It is an arithmetic number, because the mean of its divisors is an integer number (102874800).

Almost surely, 2^1131233433 is an apocalyptic number.

It is an amenable number.

1131233433 is a deficient number, since it is larger than the sum of its proper divisors (514763367).

1131233433 is a wasteful number, since it uses less digits than its factorization.

1131233433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11812.

The product of its digits is 1944, while the sum is 24.

The square root of 1131233433 is about 33633.8138337002. The cubic root of 1131233433 is about 1041.9592728607.

Adding to 1131233433 its reverse (3343321311), we get a palindrome (4474554744).

The spelling of 1131233433 in words is "one billion, one hundred thirty-one million, two hundred thirty-three thousand, four hundred thirty-three".