20003240233 has 2 divisors, whose sum is σ = 20003240234. Its totient is φ = 20003240232.

The previous prime is 20003240177. The next prime is 20003240237. The reversal of 20003240233 is 33204230002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13112082064 + 6891158169 = 114508^2 + 83013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003240233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20003240233.

It is not a weakly prime, because it can be changed into another prime (20003240237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001620116 + 10001620117.

It is an arithmetic number, because the mean of its divisors is an integer number (10001620117).

Almost surely, 2^20003240233 is an apocalyptic number.

It is an amenable number.

20003240233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003240233 is an equidigital number, since it uses as much as digits as its factorization.

20003240233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 19.

Adding to 20003240233 its reverse (33204230002), we get a palindrome (53207470235).

The spelling of 20003240233 in words is "twenty billion, three million, two hundred forty thousand, two hundred thirty-three".