21310103223 has 24 divisors (see below), whose sum is σ = 31127241600. Its totient is φ = 14047911360.

The previous prime is 21310103189. The next prime is 21310103231. The reversal of 21310103223 is 32230101312.

21310103223 is a `hidden beast` number, since 21 + 310 + 10 + 322 + 3 = 666.

It is not a de Polignac number, because 21310103223 - 2⁸ = 21310102967 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21310103196 and 21310103205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310103273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 263413 + ... + 334673.

It is an arithmetic number, because the mean of its divisors is an integer number (1296968400).

Almost surely, 2^21310103223 is an apocalyptic number.

21310103223 is a deficient number, since it is larger than the sum of its proper divisors (9817138377).

21310103223 is a wasteful number, since it uses less digits than its factorization.

21310103223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71639 (or 71636 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21310103223 its reverse (32230101312), we get a palindrome (53540204535).

The spelling of 21310103223 in words is "twenty-one billion, three hundred ten million, one hundred three thousand, two hundred twenty-three".