20423331134317 has 2 divisors, whose sum is σ = 20423331134318. Its totient is φ = 20423331134316.

The previous prime is 20423331134303. The next prime is 20423331134357. The reversal of 20423331134317 is 71343113332402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12704013504361 + 7719317629956 = 3564269^2 + 2778366^2 .

It is a cyclic number.

It is not a de Polignac number, because 20423331134317 - 2¹⁹ = 20423330610029 is a prime.

It is a super-2 number, since 2×20423331134317² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20423331134357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211665567158 + 10211665567159.

It is an arithmetic number, because the mean of its divisors is an integer number (10211665567159).

Almost surely, 2^{20423331134317} is an apocalyptic number.

It is an amenable number.

20423331134317 is a deficient number, since it is larger than the sum of its proper divisors (1).

20423331134317 is an equidigital number, since it uses as much as digits as its factorization.

20423331134317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 37.

Adding to 20423331134317 its reverse (71343113332402), we get a palindrome (91766444466719).

The spelling of 20423331134317 in words is "twenty trillion, four hundred twenty-three billion, three hundred thirty-one million, one hundred thirty-four thousand, three hundred seventeen".