20300011243 has 2 divisors, whose sum is σ = 20300011244. Its totient is φ = 20300011242.

The previous prime is 20300011189. The next prime is 20300011271. The reversal of 20300011243 is 34211000302.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20300011243 is a prime.

It is not a weakly prime, because it can be changed into another prime (20300014243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10150005621 + 10150005622.

It is an arithmetic number, because the mean of its divisors is an integer number (10150005622).

Almost surely, 2^20300011243 is an apocalyptic number.

20300011243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20300011243 is an equidigital number, since it uses as much as digits as its factorization.

20300011243 is an evil number, because the sum of its binary digits is even.

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

Adding to 20300011243 its reverse (34211000302), we get a palindrome (54511011545).

The spelling of 20300011243 in words is "twenty billion, three hundred million, eleven thousand, two hundred forty-three".