2871123112 has 64 divisors (see below), whose sum is σ = 6428338560. Its totient is φ = 1184889600.

The previous prime is 2871123107. The next prime is 2871123131. The reversal of 2871123112 is 2113211782.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49213 + ... + 90355.

It is an arithmetic number, because the mean of its divisors is an integer number (100442790).

Almost surely, 2^2871123112 is an apocalyptic number.

2871123112 is a gapful number since it is divisible by the number (22) 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 2871123112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3214169280).

2871123112 is an abundant number, since it is smaller than the sum of its proper divisors (3557215448).

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

2871123112 is a wasteful number, since it uses less digits than its factorization.

2871123112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41234 (or 41230 counting only the distinct ones).

The product of its digits is 1344, while the sum is 28.

The square root of 2871123112 is about 53582.8621109399. The cubic root of 2871123112 is about 1421.2940514726.

Adding to 2871123112 its reverse (2113211782), we get a palindrome (4984334894).

The spelling of 2871123112 in words is "two billion, eight hundred seventy-one million, one hundred twenty-three thousand, one hundred twelve".