20203443011 has 2 divisors, whose sum is σ = 20203443012. Its totient is φ = 20203443010.

The previous prime is 20203442999. The next prime is 20203443031. The reversal of 20203443011 is 11034430202.

It is an a-pointer prime, because the next prime (20203443031) can be obtained adding 20203443011 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20203443011 is a prime.

It is a super-2 number, since 2×20203443011² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20203443031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101721505 + 10101721506.

It is an arithmetic number, because the mean of its divisors is an integer number (10101721506).

Almost surely, 2^20203443011 is an apocalyptic number.

20203443011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203443011 is an equidigital number, since it uses as much as digits as its factorization.

20203443011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20203443011 its reverse (11034430202), we get a palindrome (31237873213).

The spelling of 20203443011 in words is "twenty billion, two hundred three million, four hundred forty-three thousand, eleven".