1131127841 has 4 divisors (see below), whose sum is σ = 1131244800. Its totient is φ = 1131010884.

The previous prime is 1131127831. The next prime is 1131127849. The reversal of 1131127841 is 1487211311.

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-1131127841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131127849) 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 3 ways as a sum of consecutive naturals, for example, 42521 + ... + 63798.

It is an arithmetic number, because the mean of its divisors is an integer number (282811200).

Almost surely, 2^1131127841 is an apocalyptic number.

It is an amenable number.

1131127841 is a deficient number, since it is larger than the sum of its proper divisors (116959).

1131127841 is a wasteful number, since it uses less digits than its factorization.

1131127841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116958.

The product of its digits is 1344, while the sum is 29.

The square root of 1131127841 is about 33632.2440672638. The cubic root of 1131127841 is about 1041.9268522056.

The spelling of 1131127841 in words is "one billion, one hundred thirty-one million, one hundred twenty-seven thousand, eight hundred forty-one".