2144111231 has 4 divisors (see below), whose sum is σ = 2146212264. Its totient is φ = 2142010200.

The previous prime is 2144111227. The next prime is 2144111269. The reversal of 2144111231 is 1321114412.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2144111231 - 2² = 2144111227 is a prime.

It is a super-2 number, since 2×2144111231² = 9194425941800670722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144110231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048985 + ... + 1051026.

It is an arithmetic number, because the mean of its divisors is an integer number (536553066).

Almost surely, 2^2144111231 is an apocalyptic number.

2144111231 is a deficient number, since it is larger than the sum of its proper divisors (2101033).

2144111231 is a wasteful number, since it uses less digits than its factorization.

2144111231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101032.

The product of its digits is 192, while the sum is 20.

The square root of 2144111231 is about 46304.5487074434. The cubic root of 2144111231 is about 1289.4834442053.

Adding to 2144111231 its reverse (1321114412), we get a palindrome (3465225643).

The spelling of 2144111231 in words is "two billion, one hundred forty-four million, one hundred eleven thousand, two hundred thirty-one".