202120331313 has 16 divisors (see below), whose sum is σ = 281392159680. Its totient is φ = 128884545216.

The previous prime is 202120331291. The next prime is 202120331333. The reversal of 202120331313 is 313133021202.

It is not a de Polignac number, because 202120331313 - 2²⁸ = 201851895857 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202120331313.

It is not an unprimeable number, because it can be changed into a prime (202120331333) 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, 10846870 + ... + 10865487.

It is an arithmetic number, because the mean of its divisors is an integer number (17587009980).

Almost surely, 2^202120331313 is an apocalyptic number.

It is an amenable number.

202120331313 is a deficient number, since it is larger than the sum of its proper divisors (79271828367).

202120331313 is a wasteful number, since it uses less digits than its factorization.

202120331313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21712496.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 202120331313 its reverse (313133021202), we get a palindrome (515253352515).

The spelling of 202120331313 in words is "two hundred two billion, one hundred twenty million, three hundred thirty-one thousand, three hundred thirteen".