1323005 has 4 divisors (see below), whose sum is σ = 1587612. Its totient is φ = 1058400.

The previous prime is 1323001. The next prime is 1323017. The reversal of 1323005 is 5003231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 573049 + 749956 = 757^2 + 866^2 .

It is not a de Polignac number, because 1323005 - 2² = 1323001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132296 + ... + 132305.

It is an arithmetic number, because the mean of its divisors is an integer number (396903).

2^1323005 is an apocalyptic number.

It is an amenable number.

1323005 is a deficient number, since it is larger than the sum of its proper divisors (264607).

1323005 is an equidigital number, since it uses as much as digits as its factorization.

1323005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264606.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 1323005 is about 1150.2195442610. The cubic root of 1323005 is about 109.7793095963.

Adding to 1323005 its reverse (5003231), we get a palindrome (6326236).

The spelling of 1323005 in words is "one million, three hundred twenty-three thousand, five".