20334340313 has 10 divisors (see below), whose sum is σ = 23721988314. Its totient is φ = 17429432496.

The previous prime is 20334340309. The next prime is 20334340331. The reversal of 20334340313 is 31304343302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12624095449 + 7710244864 = 112357^2 + 87808^2 .

It is not a de Polignac number, because 20334340313 - 2² = 20334340309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20334340343) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4232156 + ... + 4236957.

Almost surely, 2^20334340313 is an apocalyptic number.

It is an amenable number.

20334340313 is a deficient number, since it is larger than the sum of its proper divisors (3387648001).

20334340313 is an frugal number, since it uses more digits than its factorization.

20334340313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8469141 (or 8469120 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 20334340313 its reverse (31304343302), we get a palindrome (51638683615).

The spelling of 20334340313 in words is "twenty billion, three hundred thirty-four million, three hundred forty thousand, three hundred thirteen".