2143244401 has 4 divisors (see below), whose sum is σ = 2149084672. Its totient is φ = 2137404132.

The previous prime is 2143244381. The next prime is 2143244429. The reversal of 2143244401 is 1044423412.

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 2143244401 - 2⁷ = 2143244273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143244431) 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, 2919585 + ... + 2920318.

It is an arithmetic number, because the mean of its divisors is an integer number (537271168).

Almost surely, 2^2143244401 is an apocalyptic number.

It is an amenable number.

2143244401 is a deficient number, since it is larger than the sum of its proper divisors (5840271).

2143244401 is an equidigital number, since it uses as much as digits as its factorization.

2143244401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5840270.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 2143244401 is about 46295.1876656743. The cubic root of 2143244401 is about 1289.3096482469.

Adding to 2143244401 its reverse (1044423412), we get a palindrome (3187667813).

The spelling of 2143244401 in words is "two billion, one hundred forty-three million, two hundred forty-four thousand, four hundred one".