2144132321 has 4 divisors (see below), whose sum is σ = 2147530944. Its totient is φ = 2140733700.

The previous prime is 2144132317. The next prime is 2144132323. The reversal of 2144132321 is 1232314412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2144132321 - 2² = 2144132317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2144132323) 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, 1698365 + ... + 1699626.

It is an arithmetic number, because the mean of its divisors is an integer number (536882736).

Almost surely, 2^2144132321 is an apocalyptic number.

It is an amenable number.

2144132321 is a deficient number, since it is larger than the sum of its proper divisors (3398623).

2144132321 is an equidigital number, since it uses as much as digits as its factorization.

2144132321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3398622.

The product of its digits is 1152, while the sum is 23.

The square root of 2144132321 is about 46304.7764382898. The cubic root of 2144132321 is about 1289.4876720825.

Adding to 2144132321 its reverse (1232314412), we get a palindrome (3376446733).

The spelling of 2144132321 in words is "two billion, one hundred forty-four million, one hundred thirty-two thousand, three hundred twenty-one".