21313200311304 has 128 divisors (see below), whose sum is σ = 58605167001600. Its totient is φ = 6405492810240.

The previous prime is 21313200311203. The next prime is 21313200311317. The reversal of 21313200311304 is 40311300231312.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39043557 + ... + 39585675.

It is an arithmetic number, because the mean of its divisors is an integer number (457852867200).

Almost surely, 2^{21313200311304} is an apocalyptic number.

21313200311304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21313200311304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29302583500800).

21313200311304 is an abundant number, since it is smaller than the sum of its proper divisors (37291966690296).

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

21313200311304 is a wasteful number, since it uses less digits than its factorization.

21313200311304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543363 (or 543359 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21313200311304 its reverse (40311300231312), we get a palindrome (61624500542616).

The spelling of 21313200311304 in words is "twenty-one trillion, three hundred thirteen billion, two hundred million, three hundred eleven thousand, three hundred four".