20117631226331 has 4 divisors (see below), whose sum is σ = 20117642713200. Its totient is φ = 20117619739464.

The previous prime is 20117631226327. The next prime is 20117631226393. The reversal of 20117631226331 is 13362213671102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20117631226331 - 2² = 20117631226327 is a prime.

It is a super-2 number, since 2×20117631226331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20117631220331) 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 in 3 ways as a sum of consecutive naturals, for example, 2509376 + ... + 6821453.

It is an arithmetic number, because the mean of its divisors is an integer number (5029410678300).

Almost surely, 2^{20117631226331} is an apocalyptic number.

20117631226331 is a deficient number, since it is larger than the sum of its proper divisors (11486869).

20117631226331 is an equidigital number, since it uses as much as digits as its factorization.

20117631226331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11486868.

The product of its (nonzero) digits is 54432, while the sum is 38.

Adding to 20117631226331 its reverse (13362213671102), we get a palindrome (33479844897433).

The spelling of 20117631226331 in words is "twenty trillion, one hundred seventeen billion, six hundred thirty-one million, two hundred twenty-six thousand, three hundred thirty-one".