2143111104 has 84 divisors (see below), whose sum is σ = 6184315800. Its totient is φ = 709547520.

The previous prime is 2143111093. The next prime is 2143111121. The reversal of 2143111104 is 4011113412.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 73339 + ... + 98309.

Almost surely, 2^2143111104 is an apocalyptic number.

2143111104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143111104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3092157900).

2143111104 is an abundant number, since it is smaller than the sum of its proper divisors (4041204696).

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

2143111104 is a wasteful number, since it uses less digits than its factorization.

2143111104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25138 (or 25125 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 2143111104 is about 46293.7480012150. The cubic root of 2143111104 is about 1289.2829185731.

Adding to 2143111104 its reverse (4011113412), we get a palindrome (6154224516).

The spelling of 2143111104 in words is "two billion, one hundred forty-three million, one hundred eleven thousand, one hundred four".