20013404212331 has 2 divisors, whose sum is σ = 20013404212332. Its totient is φ = 20013404212330.

The previous prime is 20013404212327. The next prime is 20013404212363. The reversal of 20013404212331 is 13321240431002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20013404212331 - 2² = 20013404212327 is a prime.

It is a super-2 number, since 2×20013404212331² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20013404212331.

It is not a weakly prime, because it can be changed into another prime (20013404212381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006702106165 + 10006702106166.

It is an arithmetic number, because the mean of its divisors is an integer number (10006702106166).

Almost surely, 2^{20013404212331} is an apocalyptic number.

20013404212331 is a deficient number, since it is larger than the sum of its proper divisors (1).

20013404212331 is an equidigital number, since it uses as much as digits as its factorization.

20013404212331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 20013404212331 its reverse (13321240431002), we get a palindrome (33334644643333).

The spelling of 20013404212331 in words is "twenty trillion, thirteen billion, four hundred four million, two hundred twelve thousand, three hundred thirty-one".