2003312323403 has 4 divisors (see below), whose sum is σ = 2003342588760. Its totient is φ = 2003282058048.

The previous prime is 2003312323373. The next prime is 2003312323427. The reversal of 2003312323403 is 3043232133002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2003312323403 - 2²⁸ = 2003043887947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003312323483) 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, 15033173 + ... + 15165846.

It is an arithmetic number, because the mean of its divisors is an integer number (500835647190).

Almost surely, 2^{2003312323403} is an apocalyptic number.

2003312323403 is a deficient number, since it is larger than the sum of its proper divisors (30265357).

2003312323403 is an equidigital number, since it uses as much as digits as its factorization.

2003312323403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30265356.

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 2003312323403 its reverse (3043232133002), we get a palindrome (5046544456405).

The spelling of 2003312323403 in words is "two trillion, three billion, three hundred twelve million, three hundred twenty-three thousand, four hundred three".