20000312243 has 2 divisors, whose sum is σ = 20000312244. Its totient is φ = 20000312242.

The previous prime is 20000312221. The next prime is 20000312257. The reversal of 20000312243 is 34221300002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20000312243 - 2²⁰ = 19999263667 is a prime.

It is not a weakly prime, because it can be changed into another prime (20000312203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000156121 + 10000156122.

It is an arithmetic number, because the mean of its divisors is an integer number (10000156122).

Almost surely, 2^20000312243 is an apocalyptic number.

20000312243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000312243 is an equidigital number, since it uses as much as digits as its factorization.

20000312243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20000312243 its reverse (34221300002), we get a palindrome (54221612245).

The spelling of 20000312243 in words is "twenty billion, three hundred twelve thousand, two hundred forty-three".