20113302313 has 4 divisors (see below), whose sum is σ = 21660479428. Its totient is φ = 18566125200.

The previous prime is 20113302271. The next prime is 20113302343. The reversal of 20113302313 is 31320331102.

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 5368785984 + 14744516329 = 73272^2 + 121427^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113302313 - 2²¹ = 20111205161 is a prime.

It is a super-2 number, since 2×20113302313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113302343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773588538 + ... + 773588563.

It is an arithmetic number, because the mean of its divisors is an integer number (5415119857).

Almost surely, 2^20113302313 is an apocalyptic number.

It is an amenable number.

20113302313 is a deficient number, since it is larger than the sum of its proper divisors (1547177115).

20113302313 is a wasteful number, since it uses less digits than its factorization.

20113302313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547177114.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 20113302313 its reverse (31320331102), we get a palindrome (51433633415).

The spelling of 20113302313 in words is "twenty billion, one hundred thirteen million, three hundred two thousand, three hundred thirteen".