1131139 has 2 divisors, whose sum is σ = 1131140. Its totient is φ = 1131138.

The previous prime is 1131133. The next prime is 1131157. The reversal of 1131139 is 9311311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1131139 - 2³ = 1131131 is a prime.

It is not a weakly prime, because it can be changed into another prime (1131131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565569 + 565570.

It is an arithmetic number, because the mean of its divisors is an integer number (565570).

2^1131139 is an apocalyptic number.

1131139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131139 is an equidigital number, since it uses as much as digits as its factorization.

1131139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81, while the sum is 19.

The square root of 1131139 is about 1063.5501868741. The cubic root of 1131139 is about 104.1930278527.

The spelling of 1131139 in words is "one million, one hundred thirty-one thousand, one hundred thirty-nine".