20320033313 has 2 divisors, whose sum is σ = 20320033314. Its totient is φ = 20320033312.

The previous prime is 20320033289. The next prime is 20320033337. The reversal of 20320033313 is 31333002302.

It is a balanced prime because it is at equal distance from previous prime (20320033289) and next prime (20320033337).

It can be written as a sum of positive squares in only one way, i.e., 20252989969 + 67043344 = 142313^2 + 8188^2 .

It is a cyclic number.

It is not a de Polignac number, because 20320033313 - 2⁶ = 20320033249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20320033373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160016656 + 10160016657.

It is an arithmetic number, because the mean of its divisors is an integer number (10160016657).

Almost surely, 2^20320033313 is an apocalyptic number.

It is an amenable number.

20320033313 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320033313 is an equidigital number, since it uses as much as digits as its factorization.

20320033313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 20.

Adding to 20320033313 its reverse (31333002302), we get a palindrome (51653035615).

The spelling of 20320033313 in words is "twenty billion, three hundred twenty million, thirty-three thousand, three hundred thirteen".