1323312003 has 48 divisors (see below), whose sum is σ = 2133462240. Its totient is φ = 785221632.

The previous prime is 1323311989. The next prime is 1323312007. The reversal of 1323312003 is 3002133231.

1323312003 is a `hidden beast` number, since 132 + 331 + 200 + 3 = 666.

It is not a de Polignac number, because 1323312003 - 2¹⁶ = 1323246467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1323312007) 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 47 ways as a sum of consecutive naturals, for example, 364051 + ... + 367667.

It is an arithmetic number, because the mean of its divisors is an integer number (44447130).

Almost surely, 2^1323312003 is an apocalyptic number.

1323312003 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1323312003 is a deficient number, since it is larger than the sum of its proper divisors (810150237).

1323312003 is a wasteful number, since it uses less digits than its factorization.

1323312003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748 (or 3745 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1323312003 is about 36377.3556350651. The cubic root of 1323312003 is about 1097.8780036056.

Adding to 1323312003 its reverse (3002133231), we get a palindrome (4325445234).

The spelling of 1323312003 in words is "one billion, three hundred twenty-three million, three hundred twelve thousand, three".