1323313203 has 16 divisors (see below), whose sum is σ = 1795629056. Its totient is φ = 866738880.

The previous prime is 1323313139. The next prime is 1323313283. The reversal of 1323313203 is 3023133231.

It is not a de Polignac number, because 1323313203 - 2⁶ = 1323313139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1323313203.

It is not an unprimeable number, because it can be changed into a prime (1323313283) 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 in 15 ways as a sum of consecutive naturals, for example, 22383 + ... + 56103.

It is an arithmetic number, because the mean of its divisors is an integer number (112226816).

Almost surely, 2^1323313203 is an apocalyptic number.

1323313203 is a deficient number, since it is larger than the sum of its proper divisors (472315853).

1323313203 is a wasteful number, since it uses less digits than its factorization.

1323313203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33954.

The product of its (nonzero) digits is 972, while the sum is 21.

The square root of 1323313203 is about 36377.3721288386. The cubic root of 1323313203 is about 1097.8783354632.

Adding to 1323313203 its reverse (3023133231), we get a palindrome (4346446434).

The spelling of 1323313203 in words is "one billion, three hundred twenty-three million, three hundred thirteen thousand, two hundred three".