210021312313 has 16 divisors (see below), whose sum is σ = 214771075200. Its totient is φ = 205316841600.

The previous prime is 210021312289. The next prime is 210021312343. The reversal of 210021312313 is 313213120012.

It is a cyclic number.

It is not a de Polignac number, because 210021312313 - 2¹³ = 210021304121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210021312343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8281693 + ... + 8307013.

It is an arithmetic number, because the mean of its divisors is an integer number (13423192200).

Almost surely, 2^210021312313 is an apocalyptic number.

It is an amenable number.

210021312313 is a deficient number, since it is larger than the sum of its proper divisors (4749762887).

210021312313 is a wasteful number, since it uses less digits than its factorization.

210021312313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26208.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 210021312313 its reverse (313213120012), we get a palindrome (523234432325).

The spelling of 210021312313 in words is "two hundred ten billion, twenty-one million, three hundred twelve thousand, three hundred thirteen".