1131112133 has 4 divisors (see below), whose sum is σ = 1131449088. Its totient is φ = 1130775180.

The previous prime is 1131112121. The next prime is 1131112181. The reversal of 1131112133 is 3312111311.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1131112133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131115133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163391 + ... + 170172.

It is an arithmetic number, because the mean of its divisors is an integer number (282862272).

Almost surely, 2^1131112133 is an apocalyptic number.

It is an amenable number.

1131112133 is a deficient number, since it is larger than the sum of its proper divisors (336955).

1131112133 is an equidigital number, since it uses as much as digits as its factorization.

1131112133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336954.

The product of its digits is 54, while the sum is 17.

The square root of 1131112133 is about 33632.0105405550. The cubic root of 1131112133 is about 1041.9220290954.

Adding to 1131112133 its reverse (3312111311), we get a palindrome (4443223444).

The spelling of 1131112133 in words is "one billion, one hundred thirty-one million, one hundred twelve thousand, one hundred thirty-three".