4001231 has 8 divisors (see below), whose sum is σ = 4414704. Its totient is φ = 3602880.

The previous prime is 4001227. The next prime is 4001237. The reversal of 4001231 is 1321004.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 4001231 - 2² = 4001227 is a prime.

It is a super-2 number, since 2×4001231² = 32019699030722, 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 (4001237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3221 + ... + 4286.

It is an arithmetic number, because the mean of its divisors is an integer number (551838).

Almost surely, 2^4001231 is an apocalyptic number.

4001231 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4001231 is a deficient number, since it is larger than the sum of its proper divisors (413473).

4001231 is a wasteful number, since it uses less digits than its factorization.

4001231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7561.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 4001231 is about 2000.3077263261. The cubic root of 4001231 is about 158.7563876158.

Adding to 4001231 its reverse (1321004), we get a palindrome (5322235).

The spelling of 4001231 in words is "four million, one thousand, two hundred thirty-one".