21031333230333 has 8 divisors (see below), whose sum is σ = 28075850277568. Its totient is φ = 14003852501664.

The previous prime is 21031333230317. The next prime is 21031333230373. The reversal of 21031333230333 is 33303233313012.

It is a happy number.

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

It is not a de Polignac number, because 21031333230333 - 2⁴ = 21031333230317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21031333230333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031333230373) 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, 4259076760 + ... + 4259081697.

It is an arithmetic number, because the mean of its divisors is an integer number (3509481284696).

Almost surely, 2^{21031333230333} is an apocalyptic number.

It is an amenable number.

21031333230333 is a deficient number, since it is larger than the sum of its proper divisors (7044517047235).

21031333230333 is an equidigital number, since it uses as much as digits as its factorization.

21031333230333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8518159283.

The product of its (nonzero) digits is 26244, while the sum is 30.

Adding to 21031333230333 its reverse (33303233313012), we get a palindrome (54334566543345).

The spelling of 21031333230333 in words is "twenty-one trillion, thirty-one billion, three hundred thirty-three million, two hundred thirty thousand, three hundred thirty-three".