200321312993 has 2 divisors, whose sum is σ = 200321312994. Its totient is φ = 200321312992.

The previous prime is 200321312963. The next prime is 200321313047. The reversal of 200321312993 is 399213123002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123132915409 + 77188397584 = 350903^2 + 277828^2 .

It is a cyclic number.

It is not a de Polignac number, because 200321312993 - 2¹⁰ = 200321311969 is a prime.

It is not a weakly prime, because it can be changed into another prime (200321312903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100160656496 + 100160656497.

It is an arithmetic number, because the mean of its divisors is an integer number (100160656497).

Almost surely, 2^200321312993 is an apocalyptic number.

It is an amenable number.

200321312993 is a deficient number, since it is larger than the sum of its proper divisors (1).

200321312993 is an equidigital number, since it uses as much as digits as its factorization.

200321312993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 35.

Adding to 200321312993 its reverse (399213123002), we get a palindrome (599534435995).

The spelling of 200321312993 in words is "two hundred billion, three hundred twenty-one million, three hundred twelve thousand, nine hundred ninety-three".