2121431344 has 20 divisors (see below), whose sum is σ = 4139847880. Its totient is φ = 1053083520.

The previous prime is 2121431321. The next prime is 2121431383. The reversal of 2121431344 is 4431341212.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474717 + ... + 479164.

It is an arithmetic number, because the mean of its divisors is an integer number (206992394).

Almost surely, 2^2121431344 is an apocalyptic number.

It is an amenable number.

2121431344 is a deficient number, since it is larger than the sum of its proper divisors (2018416536).

2121431344 is a wasteful number, since it uses less digits than its factorization.

2121431344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954028 (or 954022 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 2121431344 is about 46058.9985127771. The cubic root of 2121431344 is about 1284.9207042773.

Adding to 2121431344 its reverse (4431341212), we get a palindrome (6552772556).

The spelling of 2121431344 in words is "two billion, one hundred twenty-one million, four hundred thirty-one thousand, three hundred forty-four".