1161343 has 2 divisors, whose sum is σ = 1161344. Its totient is φ = 1161342.

The previous prime is 1161331. The next prime is 1161371. The reversal of 1161343 is 3431611.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161343 is a prime.

It is an Ulam number.

1161343 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1161313) 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 as a sum of consecutive naturals, namely, 580671 + 580672.

It is an arithmetic number, because the mean of its divisors is an integer number (580672).

2^1161343 is an apocalyptic number.

1161343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1161343 is an equidigital number, since it uses as much as digits as its factorization.

1161343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 1161343 is about 1077.6562531717. The cubic root of 1161343 is about 105.1122910555.

Adding to 1161343 its reverse (3431611), we get a palindrome (4592954).

The spelling of 1161343 in words is "one million, one hundred sixty-one thousand, three hundred forty-three".