21302333231311 has 8 divisors (see below), whose sum is σ = 23238951232464. Its totient is φ = 19365722272320.

The previous prime is 21302333231293. The next prime is 21302333231339. The reversal of 21302333231311 is 11313233320312.

It is a happy number.

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 21302333231311 - 2⁵ = 21302333231279 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21302333231311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21302333231911) 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, 6084225 + ... + 8923141.

It is an arithmetic number, because the mean of its divisors is an integer number (2904868904058).

Almost surely, 2^{21302333231311} is an apocalyptic number.

21302333231311 is a deficient number, since it is larger than the sum of its proper divisors (1936618001153).

21302333231311 is a wasteful number, since it uses less digits than its factorization.

21302333231311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521081.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 21302333231311 its reverse (11313233320312), we get a palindrome (32615566551623).

The spelling of 21302333231311 in words is "twenty-one trillion, three hundred two billion, three hundred thirty-three million, two hundred thirty-one thousand, three hundred eleven".