1323003505 has 4 divisors (see below), whose sum is σ = 1587604212. Its totient is φ = 1058402800.

The previous prime is 1323003503. The next prime is 1323003527. The reversal of 1323003505 is 5053003231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5053003231 = 83 ⋅60879557.

It can be written as a sum of positive squares in 2 ways, for example, as 162715536 + 1160287969 = 12756^2 + 34063^2 .

It is not a de Polignac number, because 1323003505 - 2¹ = 1323003503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323003503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132300346 + ... + 132300355.

It is an arithmetic number, because the mean of its divisors is an integer number (396901053).

Almost surely, 2^1323003505 is an apocalyptic number.

It is an amenable number.

1323003505 is a deficient number, since it is larger than the sum of its proper divisors (264600707).

1323003505 is an equidigital number, since it uses as much as digits as its factorization.

1323003505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264600706.

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 1323003505 is about 36373.1151401691. The cubic root of 1323003505 is about 1097.7926824593.

Adding to 1323003505 its reverse (5053003231), we get a palindrome (6376006736).

The spelling of 1323003505 in words is "one billion, three hundred twenty-three million, three thousand, five hundred five".