20320331201 has 2 divisors, whose sum is σ = 20320331202. Its totient is φ = 20320331200.

The previous prime is 20320331191. The next prime is 20320331221. The reversal of 20320331201 is 10213302302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20023665025 + 296666176 = 141505^2 + 17224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20320331201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20320331201.

It is not a weakly prime, because it can be changed into another prime (20320331221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160165600 + 10160165601.

It is an arithmetic number, because the mean of its divisors is an integer number (10160165601).

Almost surely, 2^20320331201 is an apocalyptic number.

It is an amenable number.

20320331201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20320331201 is an equidigital number, since it uses as much as digits as its factorization.

20320331201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20320331201 its reverse (10213302302), we get a palindrome (30533633503).

The spelling of 20320331201 in words is "twenty billion, three hundred twenty million, three hundred thirty-one thousand, two hundred one".