20231143223312 has 40 divisors (see below), whose sum is σ = 45045031641792. Its totient is φ = 8622586684800.

The previous prime is 20231143223297. The next prime is 20231143223329. The reversal of 20231143223312 is 21332234113202.

It is a super-2 number, since 2×20231143223312² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498972014 + ... + 499012557.

Almost surely, 2^{20231143223312} is an apocalyptic number.

It is an amenable number.

20231143223312 is an abundant number, since it is smaller than the sum of its proper divisors (24813888418480).

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

20231143223312 is a wasteful number, since it uses less digits than its factorization.

20231143223312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997984767 (or 997984761 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 20231143223312 its reverse (21332234113202), we get a palindrome (41563377336514).

The spelling of 20231143223312 in words is "twenty trillion, two hundred thirty-one billion, one hundred forty-three million, two hundred twenty-three thousand, three hundred twelve".