2144431340 has 48 divisors (see below), whose sum is σ = 4772325600. Its totient is φ = 806618112.

The previous prime is 2144431339. The next prime is 2144431343. The reversal of 2144431340 is 431344412.

It is not an unprimeable number, because it can be changed into a prime (2144431343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 565571 + ... + 569349.

It is an arithmetic number, because the mean of its divisors is an integer number (99423450).

Almost surely, 2^2144431340 is an apocalyptic number.

2144431340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144431340 is an abundant number, since it is smaller than the sum of its proper divisors (2627894260).

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

2144431340 is a wasteful number, since it uses less digits than its factorization.

2144431340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5474 (or 5472 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 2144431340 is about 46308.0051395004. The cubic root of 2144431340 is about 1289.5476129402.

Adding to 2144431340 its reverse (431344412), we get a palindrome (2575775752).

The spelling of 2144431340 in words is "two billion, one hundred forty-four million, four hundred thirty-one thousand, three hundred forty".