12724231 has 8 divisors (see below), whose sum is σ = 13787424. Its totient is φ = 11673120.

The previous prime is 12724223. The next prime is 12724249. The reversal of 12724231 is 13242721.

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 12724231 - 2³ = 12724223 is a prime.

It is a super-2 number, since 2×12724231² = 323812109082722, 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 (12724331) 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, 760 + ... + 5101.

It is an arithmetic number, because the mean of its divisors is an integer number (1723428).

Almost surely, 2^12724231 is an apocalyptic number.

12724231 is a deficient number, since it is larger than the sum of its proper divisors (1063193).

12724231 is a wasteful number, since it uses less digits than its factorization.

12724231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041.

The product of its digits is 672, while the sum is 22.

The square root of 12724231 is about 3567.1040074548. The cubic root of 12724231 is about 233.4589430263.

Adding to 12724231 its reverse (13242721), we get a palindrome (25966952).

The spelling of 12724231 in words is "twelve million, seven hundred twenty-four thousand, two hundred thirty-one".