12432231 has 24 divisors (see below), whose sum is σ = 21427440. Its totient is φ = 7103376.

The previous prime is 12432221. The next prime is 12432241. The reversal of 12432231 is 13223421.

12432231 is a `hidden beast` number, since 1 + 2 + 432 + 231 = 666.

It is an interprime number because it is at equal distance from previous prime (12432221) and next prime (12432241).

It is not a de Polignac number, because 12432231 - 2¹³ = 12424039 is a prime.

It is a super-2 number, since 2×12432231² = 309120735274722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3376 + ... + 6021.

It is an arithmetic number, because the mean of its divisors is an integer number (892810).

Almost surely, 2^12432231 is an apocalyptic number.

12432231 is a deficient number, since it is larger than the sum of its proper divisors (8995209).

12432231 is an equidigital number, since it uses as much as digits as its factorization.

12432231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9420 (or 9407 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 12432231 is about 3525.9368967694. The cubic root of 12432231 is about 231.6592736687.

Adding to 12432231 its reverse (13223421), we get a palindrome (25655652).

The spelling of 12432231 in words is "twelve million, four hundred thirty-two thousand, two hundred thirty-one".