21313300003 has 4 divisors (see below), whose sum is σ = 21315013920. Its totient is φ = 21311586088.

The previous prime is 21313299983. The next prime is 21313300033. The reversal of 21313300003 is 30000331312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21313300003 - 2³³ = 12723365411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21313300003.

It is not an unprimeable number, because it can be changed into a prime (21313300033) 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 3 ways as a sum of consecutive naturals, for example, 838168 + ... + 863221.

It is an arithmetic number, because the mean of its divisors is an integer number (5328753480).

Almost surely, 2^21313300003 is an apocalyptic number.

21313300003 is a deficient number, since it is larger than the sum of its proper divisors (1713917).

21313300003 is a wasteful number, since it uses less digits than its factorization.

21313300003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1713916.

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 21313300003 its reverse (30000331312), we get a palindrome (51313631315).

The spelling of 21313300003 in words is "twenty-one billion, three hundred thirteen million, three hundred thousand, three".