21300210313 has 4 divisors (see below), whose sum is σ = 21312793348. Its totient is φ = 21287627280.

The previous prime is 21300210311. The next prime is 21300210413. The reversal of 21300210313 is 31301200312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16814827584 + 4485382729 = 129672^2 + 66973^2 .

It is a cyclic number.

It is not a de Polignac number, because 21300210313 - 2¹ = 21300210311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21300210311) 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, 6288978 + ... + 6292363.

It is an arithmetic number, because the mean of its divisors is an integer number (5328198337).

Almost surely, 2^21300210313 is an apocalyptic number.

It is an amenable number.

21300210313 is a deficient number, since it is larger than the sum of its proper divisors (12583035).

21300210313 is a wasteful number, since it uses less digits than its factorization.

21300210313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12583034.

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

Adding to 21300210313 its reverse (31301200312), we get a palindrome (52601410625).

The spelling of 21300210313 in words is "twenty-one billion, three hundred million, two hundred ten thousand, three hundred thirteen".