21303202313 has 8 divisors (see below), whose sum is σ = 21611304000. Its totient is φ = 20995324560.

The previous prime is 21303202279. The next prime is 21303202337. The reversal of 21303202313 is 31320230312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21303202313 - 2¹⁴ = 21303185929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21303202213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140606 + ... + 249752.

It is an arithmetic number, because the mean of its divisors is an integer number (2701413000).

Almost surely, 2^21303202313 is an apocalyptic number.

It is an amenable number.

21303202313 is a deficient number, since it is larger than the sum of its proper divisors (308101687).

21303202313 is a wasteful number, since it uses less digits than its factorization.

21303202313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111967.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 21303202313 its reverse (31320230312), we get a palindrome (52623432625).

The spelling of 21303202313 in words is "twenty-one billion, three hundred three million, two hundred two thousand, three hundred thirteen".