4003231 has 2 divisors, whose sum is σ = 4003232. Its totient is φ = 4003230.

The previous prime is 4003213. The next prime is 4003253. The reversal of 4003231 is 1323004.

Together with previous prime (4003213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4003231 - 2¹¹ = 4001183 is a prime.

It is a super-2 number, since 2×4003231² = 32051716878722, which contains 22 as substring.

It is an Ulam number.

4003231 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4003201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001615 + 2001616.

It is an arithmetic number, because the mean of its divisors is an integer number (2001616).

Almost surely, 2^4003231 is an apocalyptic number.

4003231 is a deficient number, since it is larger than the sum of its proper divisors (1).

4003231 is an equidigital number, since it uses as much as digits as its factorization.

4003231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 4003231 is about 2000.8075869508. The cubic root of 4003231 is about 158.7828344674.

Adding to 4003231 its reverse (1323004), we get a palindrome (5326235).

The spelling of 4003231 in words is "four million, three thousand, two hundred thirty-one".