20124301391 has 2 divisors, whose sum is σ = 20124301392. Its totient is φ = 20124301390.

The previous prime is 20124301367. The next prime is 20124301427. The reversal of 20124301391 is 19310342102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20124301391 - 2³⁴ = 2944432207 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20124301391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20124301891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10062150695 + 10062150696.

It is an arithmetic number, because the mean of its divisors is an integer number (10062150696).

Almost surely, 2^20124301391 is an apocalyptic number.

20124301391 is a deficient number, since it is larger than the sum of its proper divisors (1).

20124301391 is an equidigital number, since it uses as much as digits as its factorization.

20124301391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 20124301391 its reverse (19310342102), we get a palindrome (39434643493).

The spelling of 20124301391 in words is "twenty billion, one hundred twenty-four million, three hundred one thousand, three hundred ninety-one".