4020231 has 8 divisors (see below), whose sum is σ = 5428480. Its totient is φ = 2646072.

The previous prime is 4020227. The next prime is 4020257. The reversal of 4020231 is 1320204.

4020231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4020231 - 2² = 4020227 is a prime.

It is a super-2 number, since 2×4020231² = 32324514586722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8245 + ... + 8718.

It is an arithmetic number, because the mean of its divisors is an integer number (678560).

Almost surely, 2^4020231 is an apocalyptic number.

4020231 is a deficient number, since it is larger than the sum of its proper divisors (1408249).

4020231 is a wasteful number, since it uses less digits than its factorization.

4020231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17045.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 4020231 is about 2005.0513709130. The cubic root of 4020231 is about 159.0072778600.

Adding to 4020231 its reverse (1320204), we get a palindrome (5340435).

The spelling of 4020231 in words is "four million, twenty thousand, two hundred thirty-one".