12567231 has 14 divisors (see below), whose sum is σ = 18843320. Its totient is φ = 8377668.

The previous prime is 12567193. The next prime is 12567259. The reversal of 12567231 is 13276521.

It is a happy number.

It is not a de Polignac number, because 12567231 - 2⁷ = 12567103 is a prime.

It is a super-2 number, since 2×12567231² = 315870590014722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12567195 and 12567204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12567631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 7891 + ... + 9348.

Almost surely, 2^12567231 is an apocalyptic number.

12567231 is a deficient number, since it is larger than the sum of its proper divisors (6276089).

12567231 is an frugal number, since it uses more digits than its factorization.

12567231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17257 (or 17242 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 12567231 is about 3545.0290548880. The cubic root of 12567231 is about 232.4947761573.

The spelling of 12567231 in words is "twelve million, five hundred sixty-seven thousand, two hundred thirty-one".