1323109 has 2 divisors, whose sum is σ = 1323110. Its totient is φ = 1323108.

The previous prime is 1323107. The next prime is 1323131. The reversal of 1323109 is 9013231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1050625 + 272484 = 1025^2 + 522^2 .

It is an emirp because it is prime and its reverse (9013231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323109 - 2¹ = 1323107 is a prime.

Together with 1323107, it forms a pair of twin primes.

1323109 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661554 + 661555.

It is an arithmetic number, because the mean of its divisors is an integer number (661555).

2^1323109 is an apocalyptic number.

It is an amenable number.

1323109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323109 is an equidigital number, since it uses as much as digits as its factorization.

1323109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 1323109 is about 1150.2647521332. The cubic root of 1323109 is about 109.7821860654.

The spelling of 1323109 in words is "one million, three hundred twenty-three thousand, one hundred nine".