21313004000 has 48 divisors (see below), whose sum is σ = 52366060656. Its totient is φ = 8525200000.

The previous prime is 21313003993. The next prime is 21313004021. The reversal of 21313004000 is 40031312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2660126 + ... + 2668125.

It is an arithmetic number, because the mean of its divisors is an integer number (1090959597).

Almost surely, 2^21313004000 is an apocalyptic number.

21313004000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21313004000 is an abundant number, since it is smaller than the sum of its proper divisors (31053056656).

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

21313004000 is an equidigital number, since it uses as much as digits as its factorization.

21313004000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328276 (or 5328258 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21313004000 its reverse (40031312), we get a palindrome (21353035312).

The spelling of 21313004000 in words is "twenty-one billion, three hundred thirteen million, four thousand".