21310113223 has 8 divisors (see below), whose sum is σ = 24355302048. Its totient is φ = 18265146144.

The previous prime is 21310113221. The next prime is 21310113257. The reversal of 21310113223 is 32231101312.

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

It is not a de Polignac number, because 21310113223 - 2¹ = 21310113221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21310113223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310113221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 320265 + ... + 381037.

It is an arithmetic number, because the mean of its divisors is an integer number (3044412756).

Almost surely, 2^21310113223 is an apocalyptic number.

21310113223 is a deficient number, since it is larger than the sum of its proper divisors (3045188825).

21310113223 is an equidigital number, since it uses as much as digits as its factorization.

21310113223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110873.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21310113223 its reverse (32231101312), we get a palindrome (53541214535).

The spelling of 21310113223 in words is "twenty-one billion, three hundred ten million, one hundred thirteen thousand, two hundred twenty-three".