1320312003 has 8 divisors (see below), whose sum is σ = 1762127616. Its totient is φ = 879352200.

The previous prime is 1320311977. The next prime is 1320312011. The reversal of 1320312003 is 3002130231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1320312003 - 2⁸ = 1320311747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320312023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210343 + ... + 216528.

It is an arithmetic number, because the mean of its divisors is an integer number (220265952).

Almost surely, 2^1320312003 is an apocalyptic number.

1320312003 is a deficient number, since it is larger than the sum of its proper divisors (441815613).

1320312003 is a wasteful number, since it uses less digits than its factorization.

1320312003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427905.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1320312003 is about 36336.0977954430. The cubic root of 1320312003 is about 1097.0477317637.

Adding to 1320312003 its reverse (3002130231), we get a palindrome (4322442234).

The spelling of 1320312003 in words is "one billion, three hundred twenty million, three hundred twelve thousand, three".