20331103542 has 16 divisors (see below), whose sum is σ = 40716360192. Its totient is φ = 6768009000.

The previous prime is 20331103489. The next prime is 20331103543. The reversal of 20331103542 is 24530113302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331103543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2251498 + ... + 2260509.

It is an arithmetic number, because the mean of its divisors is an integer number (2544772512).

Almost surely, 2^20331103542 is an apocalyptic number.

20331103542 is an abundant number, since it is smaller than the sum of its proper divisors (20385256650).

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

20331103542 is a wasteful number, since it uses less digits than its factorization.

20331103542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512763.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 20331103542 its reverse (24530113302), we get a palindrome (44861216844).

The spelling of 20331103542 in words is "twenty billion, three hundred thirty-one million, one hundred three thousand, five hundred forty-two".