20202021313 has 8 divisors (see below), whose sum is σ = 20417040936. Its totient is φ = 19987296000.

The previous prime is 20202021311. The next prime is 20202021341. The reversal of 20202021313 is 31312020202.

It can be written as a sum of positive squares in 4 ways, for example, as 8095860529 + 12106160784 = 89977^2 + 110028^2 .

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 20202021313 - 2¹ = 20202021311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20202021311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65833 + ... + 211513.

It is an arithmetic number, because the mean of its divisors is an integer number (2552130117).

Almost surely, 2^20202021313 is an apocalyptic number.

It is an amenable number.

20202021313 is a deficient number, since it is larger than the sum of its proper divisors (215019623).

20202021313 is a wasteful number, since it uses less digits than its factorization.

20202021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147155.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20202021313 its reverse (31312020202), we get a palindrome (51514041515).

The spelling of 20202021313 in words is "twenty billion, two hundred two million, twenty-one thousand, three hundred thirteen".