20233431042 has 128 divisors (see below), whose sum is σ = 47589120000. Its totient is φ = 5666841600.

The previous prime is 20233431017. The next prime is 20233431047. The reversal of 20233431042 is 24013433202.

It is not an unprimeable number, because it can be changed into a prime (20233431047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 39751084 + ... + 39751592.

It is an arithmetic number, because the mean of its divisors is an integer number (371790000).

Almost surely, 2^20233431042 is an apocalyptic number.

20233431042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20233431042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23794560000).

20233431042 is an abundant number, since it is smaller than the sum of its proper divisors (27355688958).

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

20233431042 is a wasteful number, since it uses less digits than its factorization.

20233431042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20233431042 its reverse (24013433202), we get a palindrome (44246864244).

The spelling of 20233431042 in words is "twenty billion, two hundred thirty-three million, four hundred thirty-one thousand, forty-two".