21313200311316 has 24 divisors (see below), whose sum is σ = 55256445251840. Its totient is φ = 7104400103736.

The previous prime is 21313200311203. The next prime is 21313200311317. The reversal of 21313200311316 is 61311300231312.

21313200311316 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 32 + 0 + 0 + 311 + 316 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 21313200311316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313200311317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98672223556 + ... + 98672223771.

Almost surely, 2^{21313200311316} is an apocalyptic number.

It is an amenable number.

21313200311316 is an abundant number, since it is smaller than the sum of its proper divisors (33943244940524).

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

21313200311316 is a wasteful number, since it uses less digits than its factorization.

21313200311316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197344447340 (or 197344447332 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 21313200311316 its reverse (61311300231312), we get a palindrome (82624500542628).

The spelling of 21313200311316 in words is "twenty-one trillion, three hundred thirteen billion, two hundred million, three hundred eleven thousand, three hundred sixteen".