1312304003 has 4 divisors (see below), whose sum is σ = 1312674048. Its totient is φ = 1311933960.

The previous prime is 1312303999. The next prime is 1312304011. The reversal of 1312304003 is 3004032131.

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: 3004032131 = 3989 ⋅753079.

It is a cyclic number.

It is not a de Polignac number, because 1312304003 - 2² = 1312303999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312304503) 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, 179651 + ... + 186812.

It is an arithmetic number, because the mean of its divisors is an integer number (328168512).

Almost surely, 2^1312304003 is an apocalyptic number.

1312304003 is a deficient number, since it is larger than the sum of its proper divisors (370045).

1312304003 is an equidigital number, since it uses as much as digits as its factorization.

1312304003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370044.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1312304003 is about 36225.7367488917. The cubic root of 1312304003 is about 1094.8252824105.

Adding to 1312304003 its reverse (3004032131), we get a palindrome (4316336134).

The spelling of 1312304003 in words is "one billion, three hundred twelve million, three hundred four thousand, three".