12040231 has 6 divisors (see below), whose sum is σ = 14006040. Its totient is φ = 10320156.

The previous prime is 12040213. The next prime is 12040253. The reversal of 12040231 is 13204021.

It is not a de Polignac number, because 12040231 - 2¹⁷ = 11909159 is a prime.

It is a super-2 number, since 2×12040231² = 289934325066722, 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 (12040211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122811 + ... + 122908.

It is an arithmetic number, because the mean of its divisors is an integer number (2334340).

Almost surely, 2^12040231 is an apocalyptic number.

12040231 is a deficient number, since it is larger than the sum of its proper divisors (1965809).

12040231 is an equidigital number, since it uses as much as digits as its factorization.

12040231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245733 (or 245726 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12040231 is about 3469.9036009665. The cubic root of 12040231 is about 229.1984131153.

Adding to 12040231 its reverse (13204021), we get a palindrome (25244252).

The spelling of 12040231 in words is "twelve million, forty thousand, two hundred thirty-one".