20423331134303 has 2 divisors, whose sum is σ = 20423331134304. Its totient is φ = 20423331134302.

The previous prime is 20423331134279. The next prime is 20423331134317. The reversal of 20423331134303 is 30343113332402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20423331134303 - 2²⁰ = 20423330085727 is a prime.

It is a super-2 number, since 2×20423331134303² (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 20423331134303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20423331184303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211665567151 + 10211665567152.

It is an arithmetic number, because the mean of its divisors is an integer number (10211665567152).

Almost surely, 2^{20423331134303} is an apocalyptic number.

20423331134303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20423331134303 is an equidigital number, since it uses as much as digits as its factorization.

20423331134303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 32.

Adding to 20423331134303 its reverse (30343113332402), we get a palindrome (50766444466705).

The spelling of 20423331134303 in words is "twenty trillion, four hundred twenty-three billion, three hundred thirty-one million, one hundred thirty-four thousand, three hundred three".