20113312143 has 8 divisors (see below), whose sum is σ = 26843564800. Its totient is φ = 13395967128.

The previous prime is 20113312111. The next prime is 20113312217. The reversal of 20113312143 is 34121331102.

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

It is not a de Polignac number, because 20113312143 - 2⁵ = 20113312111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113312103) by changing a digit.

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, 3223273 + ... + 3229506.

It is an arithmetic number, because the mean of its divisors is an integer number (3355445600).

Almost surely, 2^20113312143 is an apocalyptic number.

20113312143 is a deficient number, since it is larger than the sum of its proper divisors (6730252657).

20113312143 is a wasteful number, since it uses less digits than its factorization.

20113312143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6453821.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20113312143 its reverse (34121331102), we get a palindrome (54234643245).

The spelling of 20113312143 in words is "twenty billion, one hundred thirteen million, three hundred twelve thousand, one hundred forty-three".