21313210030 has 48 divisors (see below), whose sum is σ = 45128774160. Its totient is φ = 7225266048.

The previous prime is 21313210019. The next prime is 21313210049. The reversal of 21313210030 is 3001231312.

It is a junction number, because it is equal to n+sod(n) for n = 21313209986 and 21313210013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200752 + ... + 287971.

It is an arithmetic number, because the mean of its divisors is an integer number (940182795).

Almost surely, 2^21313210030 is an apocalyptic number.

21313210030 is an abundant number, since it is smaller than the sum of its proper divisors (23815564130).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21313210030 is a wasteful number, since it uses less digits than its factorization.

21313210030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488833 (or 488826 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21313210030 its reverse (3001231312), we get a palindrome (24314441342).

The spelling of 21313210030 in words is "twenty-one billion, three hundred thirteen million, two hundred ten thousand, thirty".