20331341243 has 2 divisors, whose sum is σ = 20331341244. Its totient is φ = 20331341242.

The previous prime is 20331341237. The next prime is 20331341269. The reversal of 20331341243 is 34214313302.

It is an a-pointer prime, because the next prime (20331341269) can be obtained adding 20331341243 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20331341243 - 2⁸ = 20331340987 is a prime.

It is not a weakly prime, because it can be changed into another prime (20331341203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10165670621 + 10165670622.

It is an arithmetic number, because the mean of its divisors is an integer number (10165670622).

Almost surely, 2^20331341243 is an apocalyptic number.

20331341243 is a deficient number, since it is larger than the sum of its proper divisors (1).

20331341243 is an equidigital number, since it uses as much as digits as its factorization.

20331341243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 20331341243 its reverse (34214313302), we get a palindrome (54545654545).

The spelling of 20331341243 in words is "twenty billion, three hundred thirty-one million, three hundred forty-one thousand, two hundred forty-three".