200031220321 has 2 divisors, whose sum is σ = 200031220322. Its totient is φ = 200031220320.

The previous prime is 200031220309. The next prime is 200031220343. The reversal of 200031220321 is 123022130002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180931980321 + 19099240000 = 425361^2 + 138200^2 .

It is a cyclic number.

It is not a de Polignac number, because 200031220321 - 2²⁹ = 199494349409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200031220295 and 200031220304.

It is not a weakly prime, because it can be changed into another prime (200031220121) 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 as a sum of consecutive naturals, namely, 100015610160 + 100015610161.

It is an arithmetic number, because the mean of its divisors is an integer number (100015610161).

Almost surely, 2^200031220321 is an apocalyptic number.

It is an amenable number.

200031220321 is a deficient number, since it is larger than the sum of its proper divisors (1).

200031220321 is an equidigital number, since it uses as much as digits as its factorization.

200031220321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 200031220321 its reverse (123022130002), we get a palindrome (323053350323).

The spelling of 200031220321 in words is "two hundred billion, thirty-one million, two hundred twenty thousand, three hundred twenty-one".