1131243005233 has 4 divisors (see below), whose sum is σ = 1234083278448. Its totient is φ = 1028402732020.

The previous prime is 1131243005209. The next prime is 1131243005261. The reversal of 1131243005233 is 3325003421311.

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 not a de Polignac number, because 1131243005233 - 2²⁹ = 1130706134321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131243005273) 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, 51420136591 + ... + 51420136612.

It is an arithmetic number, because the mean of its divisors is an integer number (308520819612).

Almost surely, 2^{1131243005233} is an apocalyptic number.

It is an amenable number.

1131243005233 is a deficient number, since it is larger than the sum of its proper divisors (102840273215).

1131243005233 is a wasteful number, since it uses less digits than its factorization.

1131243005233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102840273214.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 1131243005233 its reverse (3325003421311), we get a palindrome (4456246426544).

The spelling of 1131243005233 in words is "one trillion, one hundred thirty-one billion, two hundred forty-three million, five thousand, two hundred thirty-three".