2001312231303 has 32 divisors (see below), whose sum is σ = 3357948856320. Its totient is φ = 1029926417760.

The previous prime is 2001312231299. The next prime is 2001312231311. The reversal of 2001312231303 is 3031322131002.

It is not a de Polignac number, because 2001312231303 - 2² = 2001312231299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2001312231303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001312231383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40459813 + ... + 40509246.

It is an arithmetic number, because the mean of its divisors is an integer number (104935901760).

Almost surely, 2^{2001312231303} is an apocalyptic number.

2001312231303 is a deficient number, since it is larger than the sum of its proper divisors (1356636625017).

2001312231303 is a wasteful number, since it uses less digits than its factorization.

2001312231303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80969187.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 2001312231303 its reverse (3031322131002), we get a palindrome (5032634362305).

The spelling of 2001312231303 in words is "two trillion, one billion, three hundred twelve million, two hundred thirty-one thousand, three hundred three".