20124343242331 has 2 divisors, whose sum is σ = 20124343242332. Its totient is φ = 20124343242330.

The previous prime is 20124343242329. The next prime is 20124343242359. The reversal of 20124343242331 is 13324234342102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20124343242331 - 2¹ = 20124343242329 is a prime.

It is a super-2 number, since 2×20124343242331² (a number of 27 digits) contains 22 as substring.

Together with 20124343242329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20124343242301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062171621165 + 10062171621166.

It is an arithmetic number, because the mean of its divisors is an integer number (10062171621166).

Almost surely, 2^{20124343242331} is an apocalyptic number.

20124343242331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124343242331 is an equidigital number, since it uses as much as digits as its factorization.

20124343242331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 20124343242331 its reverse (13324234342102), we get a palindrome (33448577584433).

The spelling of 20124343242331 in words is "twenty trillion, one hundred twenty-four billion, three hundred forty-three million, two hundred forty-two thousand, three hundred thirty-one".