1231323003 has 12 divisors (see below), whose sum is σ = 1807735488. Its totient is φ = 807424560.

The previous prime is 1231322999. The next prime is 1231323019. The reversal of 1231323003 is 3003231321.

It is not a de Polignac number, because 1231323003 - 2² = 1231322999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231323043) 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 11 ways as a sum of consecutive naturals, for example, 1120875 + ... + 1121972.

It is an arithmetic number, because the mean of its divisors is an integer number (150644624).

Almost surely, 2^1231323003 is an apocalyptic number.

1231323003 is a deficient number, since it is larger than the sum of its proper divisors (576412485).

1231323003 is a wasteful number, since it uses less digits than its factorization.

1231323003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242914 (or 2242911 counting only the distinct ones).

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

The square root of 1231323003 is about 35090.2123533044. The cubic root of 1231323003 is about 1071.8252838056.

Adding to 1231323003 its reverse (3003231321), we get a palindrome (4234554324).

The spelling of 1231323003 in words is "one billion, two hundred thirty-one million, three hundred twenty-three thousand, three".