21230310310 has 96 divisors (see below), whose sum is σ = 44766038016. Its totient is φ = 7226894400.

The previous prime is 21230310259. The next prime is 21230310317. The reversal of 21230310310 is 1301303212.

It is a super-2 number, since 2×21230310310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230310317) 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 47 ways as a sum of consecutive naturals, for example, 1299895 + ... + 1316125.

It is an arithmetic number, because the mean of its divisors is an integer number (466312896).

Almost surely, 2^21230310310 is an apocalyptic number.

21230310310 is an abundant number, since it is smaller than the sum of its proper divisors (23535727706).

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

21230310310 is a wasteful number, since it uses less digits than its factorization.

21230310310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16330 (or 16319 counting only the distinct ones).

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

Adding to 21230310310 its reverse (1301303212), we get a palindrome (22531613522).

The spelling of 21230310310 in words is "twenty-one billion, two hundred thirty million, three hundred ten thousand, three hundred ten".