4243440331 has 4 divisors (see below), whose sum is σ = 4569858832. Its totient is φ = 3917021832.

The previous prime is 4243440217. The next prime is 4243440367. The reversal of 4243440331 is 1330443424.

4243440331 is digitally balanced in base 3, 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.

It is a cyclic number.

It is not a de Polignac number, because 4243440331 - 2¹³ = 4243432139 is a prime.

It is a super-3 number, since 3×4243440331³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 4243440331.

It is not an unprimeable number, because it can be changed into a prime (4243441331) 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, 163209231 + ... + 163209256.

It is an arithmetic number, because the mean of its divisors is an integer number (1142464708).

Almost surely, 2^4243440331 is an apocalyptic number.

4243440331 is a deficient number, since it is larger than the sum of its proper divisors (326418501).

4243440331 is a wasteful number, since it uses less digits than its factorization.

4243440331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326418500.

The product of its (nonzero) digits is 13824, while the sum is 28.

The square root of 4243440331 is about 65141.6942595140. The cubic root of 4243440331 is about 1618.9721075535.

Adding to 4243440331 its reverse (1330443424), we get a palindrome (5573883755).

The spelling of 4243440331 in words is "four billion, two hundred forty-three million, four hundred forty thousand, three hundred thirty-one".