1323919 has 2 divisors, whose sum is σ = 1323920. Its totient is φ = 1323918.

The previous prime is 1323899. The next prime is 1323923. The reversal of 1323919 is 9193231.

It is a strong prime.

It is an emirp because it is prime and its reverse (9193231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323919 - 2¹⁷ = 1192847 is a prime.

It is a super-2 number, since 2×1323919² = 3505523037122, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323319) 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, 661959 + 661960.

It is an arithmetic number, because the mean of its divisors is an integer number (661960).

2^1323919 is an apocalyptic number.

1323919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323919 is an equidigital number, since it uses as much as digits as its factorization.

1323919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1458, while the sum is 28.

The square root of 1323919 is about 1150.6167911168. The cubic root of 1323919 is about 109.8045841774.

It can be divided in two parts, 13 and 23919, that added together give a palindrome (23932).

The spelling of 1323919 in words is "one million, three hundred twenty-three thousand, nine hundred nineteen".