2144320243 has 4 divisors (see below), whose sum is σ = 2309267968. Its totient is φ = 1979372520.

The previous prime is 2144320231. The next prime is 2144320253. The reversal of 2144320243 is 3420234412.

It is a happy number.

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 2144320243 - 2⁹ = 2144319731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2144320253) 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, 82473843 + ... + 82473868.

It is an arithmetic number, because the mean of its divisors is an integer number (577316992).

Almost surely, 2^2144320243 is an apocalyptic number.

2144320243 is a deficient number, since it is larger than the sum of its proper divisors (164947725).

2144320243 is a wasteful number, since it uses less digits than its factorization.

2144320243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164947724.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 2144320243 is about 46306.8055797417. The cubic root of 2144320243 is about 1289.5253432686.

Adding to 2144320243 its reverse (3420234412), we get a palindrome (5564554655).

The spelling of 2144320243 in words is "two billion, one hundred forty-four million, three hundred twenty thousand, two hundred forty-three".