21003311231311 has 8 divisors (see below), whose sum is σ = 21006289307648. Its totient is φ = 21000333375000.

The previous prime is 21003311231293. The next prime is 21003311231317. The reversal of 21003311231311 is 11313211330012.

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 21003311231311 - 2²⁵ = 21003277676879 is a prime.

It is a super-2 number, since 2×21003311231311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003311231317) 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, 286537576 + ... + 286610866.

It is an arithmetic number, because the mean of its divisors is an integer number (2625786163456).

Almost surely, 2^{21003311231311} is an apocalyptic number.

21003311231311 is a deficient number, since it is larger than the sum of its proper divisors (2978076337).

21003311231311 is a wasteful number, since it uses less digits than its factorization.

21003311231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110013.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 21003311231311 its reverse (11313211330012), we get a palindrome (32316522561323).

The spelling of 21003311231311 in words is "twenty-one trillion, three billion, three hundred eleven million, two hundred thirty-one thousand, three hundred eleven".