20423331134304 has 48 divisors (see below), whose sum is σ = 61269993404928. Its totient is φ = 5835237466752.

The previous prime is 20423331134303. The next prime is 20423331134317. The reversal of 20423331134304 is 40343113332402.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×20423331134304² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20423331134303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15195930232 + ... + 15195931575.

It is an arithmetic number, because the mean of its divisors is an integer number (1276458195936).

Almost surely, 2^{20423331134304} is an apocalyptic number.

20423331134304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20423331134304 is an abundant number, since it is smaller than the sum of its proper divisors (40846662270624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20423331134304 is a wasteful number, since it uses less digits than its factorization.

20423331134304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30391861827 (or 30391861819 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 20423331134304 its reverse (40343113332402), we get a palindrome (60766444466706).

The spelling of 20423331134304 in words is "twenty trillion, four hundred twenty-three billion, three hundred thirty-one million, one hundred thirty-four thousand, three hundred four".