20313330337 has 2 divisors, whose sum is σ = 20313330338. Its totient is φ = 20313330336.

The previous prime is 20313330329. The next prime is 20313330377. The reversal of 20313330337 is 73303331302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17541413136 + 2771917201 = 132444^2 + 52649^2 .

It is a cyclic number.

It is not a de Polignac number, because 20313330337 - 2³ = 20313330329 is a prime.

It is not a weakly prime, because it can be changed into another prime (20313330377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156665168 + 10156665169.

It is an arithmetic number, because the mean of its divisors is an integer number (10156665169).

Almost surely, 2^20313330337 is an apocalyptic number.

It is an amenable number.

20313330337 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313330337 is an equidigital number, since it uses as much as digits as its factorization.

20313330337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 28.

Adding to 20313330337 its reverse (73303331302), we get a palindrome (93616661639).

The spelling of 20313330337 in words is "twenty billion, three hundred thirteen million, three hundred thirty thousand, three hundred thirty-seven".