2443421231 has 4 divisors (see below), whose sum is σ = 2443531032. Its totient is φ = 2443311432.

The previous prime is 2443421213. The next prime is 2443421249. The reversal of 2443421231 is 1321243442.

2443421231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1321243442 = 2 ⋅660621721.

It is an interprime number because it is at equal distance from previous prime (2443421213) and next prime (2443421249).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2443421231 is a prime.

It is a super-2 number, since 2×2443421231² = 11940614624203110722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2443421231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443421131) 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, 8381 + ... + 70406.

It is an arithmetic number, because the mean of its divisors is an integer number (610882758).

Almost surely, 2^2443421231 is an apocalyptic number.

2443421231 is a deficient number, since it is larger than the sum of its proper divisors (109801).

2443421231 is an equidigital number, since it uses as much as digits as its factorization.

2443421231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109800.

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

The square root of 2443421231 is about 49430.9744087652. The cubic root of 2443421231 is about 1346.8920237734.

Adding to 2443421231 its reverse (1321243442), we get a palindrome (3764664673).

The spelling of 2443421231 in words is "two billion, four hundred forty-three million, four hundred twenty-one thousand, two hundred thirty-one".