1191347 has 2 divisors, whose sum is σ = 1191348. Its totient is φ = 1191346.

The previous prime is 1191341. The next prime is 1191353. The reversal of 1191347 is 7431911.

It is a balanced prime because it is at equal distance from previous prime (1191341) and next prime (1191353).

It is a cyclic number.

It is not a de Polignac number, because 1191347 - 2⁶ = 1191283 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1191341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595673 + 595674.

It is an arithmetic number, because the mean of its divisors is an integer number (595674).

2^1191347 is an apocalyptic number.

1191347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1191347 is an equidigital number, since it uses as much as digits as its factorization.

1191347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 26.

The square root of 1191347 is about 1091.4884332873. The cubic root of 1191347 is about 106.0098187179.

The spelling of 1191347 in words is "one million, one hundred ninety-one thousand, three hundred forty-seven".