21311322002003 has 8 divisors (see below), whose sum is σ = 23248790924736. Its totient is φ = 19373865748200.

The previous prime is 21311322001901. The next prime is 21311322002011. The reversal of 21311322002003 is 30020022311312.

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

It is a cyclic number.

It is not a de Polignac number, because 21311322002003 - 2⁸ = 21311322001747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21311322002093) 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 7 ways as a sum of consecutive naturals, for example, 538568 + ... + 6550778.

It is an arithmetic number, because the mean of its divisors is an integer number (2906098865592).

Almost surely, 2^{21311322002003} is an apocalyptic number.

21311322002003 is a deficient number, since it is larger than the sum of its proper divisors (1937468922733).

21311322002003 is a wasteful number, since it uses less digits than its factorization.

21311322002003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6334465.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21311322002003 its reverse (30020022311312), we get a palindrome (51331344313315).

The spelling of 21311322002003 in words is "twenty-one trillion, three hundred eleven billion, three hundred twenty-two million, two thousand, three".