4005224231 has 4 divisors (see below), whose sum is σ = 4018270872. Its totient is φ = 3992177592.

The previous prime is 4005224221. The next prime is 4005224233. The reversal of 4005224231 is 1324225004.

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 4005224231 - 2²² = 4001029927 is a prime.

It is a super-2 number, since 2×4005224231² = 32083642281179082722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4005224197 and 4005224206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4005224233) 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, 6522860 + ... + 6523473.

It is an arithmetic number, because the mean of its divisors is an integer number (1004567718).

Almost surely, 2^4005224231 is an apocalyptic number.

4005224231 is a deficient number, since it is larger than the sum of its proper divisors (13046641).

4005224231 is a wasteful number, since it uses less digits than its factorization.

4005224231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13046640.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 4005224231 is about 63286.8408991948. The cubic root of 4005224231 is about 1588.0918304720.

Adding to 4005224231 its reverse (1324225004), we get a palindrome (5329449235).

The spelling of 4005224231 in words is "four billion, five million, two hundred twenty-four thousand, two hundred thirty-one".