20112331142 has 8 divisors (see below), whose sum is σ = 30904313832. Its totient is φ = 9810893200.

The previous prime is 20112331121. The next prime is 20112331147. The reversal of 20112331142 is 24113321102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112331147) 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 3 ways as a sum of consecutive naturals, for example, 122636084 + ... + 122636247.

It is an arithmetic number, because the mean of its divisors is an integer number (3863039229).

Almost surely, 2^20112331142 is an apocalyptic number.

20112331142 is a deficient number, since it is larger than the sum of its proper divisors (10791982690).

20112331142 is a wasteful number, since it uses less digits than its factorization.

20112331142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245272374.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20112331142 its reverse (24113321102), we get a palindrome (44225652244).

The spelling of 20112331142 in words is "twenty billion, one hundred twelve million, three hundred thirty-one thousand, one hundred forty-two".