20331104400312 has 64 divisors (see below), whose sum is σ = 53213941872000. Its totient is φ = 6464508457344.

The previous prime is 20331104400301. The next prime is 20331104400317. The reversal of 20331104400312 is 21300440113302.

It is a happy number.

It is a super-2 number, since 2×20331104400312² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331104400317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175914262 + ... + 176029797.

It is an arithmetic number, because the mean of its divisors is an integer number (831467841750).

Almost surely, 2^{20331104400312} is an apocalyptic number.

It is an amenable number.

20331104400312 is an abundant number, since it is smaller than the sum of its proper divisors (32882837471688).

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

20331104400312 is a wasteful number, since it uses less digits than its factorization.

20331104400312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351944180 (or 351944176 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20331104400312 its reverse (21300440113302), we get a palindrome (41631544513614).

The spelling of 20331104400312 in words is "twenty trillion, three hundred thirty-one billion, one hundred four million, four hundred thousand, three hundred twelve".