1131327709 has 2 divisors, whose sum is σ = 1131327710. Its totient is φ = 1131327708.

The previous prime is 1131327689. The next prime is 1131327727. The reversal of 1131327709 is 9077231311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1098723609 + 32604100 = 33147^2 + 5710^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131327709 - 2²⁵ = 1097773277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1131327409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565663854 + 565663855.

It is an arithmetic number, because the mean of its divisors is an integer number (565663855).

Almost surely, 2^1131327709 is an apocalyptic number.

It is an amenable number.

1131327709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1131327709 is an equidigital number, since it uses as much as digits as its factorization.

1131327709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 1131327709 is about 33635.2153107424. The cubic root of 1131327709 is about 1041.9882173800.

The spelling of 1131327709 in words is "one billion, one hundred thirty-one million, three hundred twenty-seven thousand, seven hundred nine".