12386531 has 2 divisors, whose sum is σ = 12386532. Its totient is φ = 12386530.

The previous prime is 12386497. The next prime is 12386573. The reversal of 12386531 is 13568321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12386531 - 2⁶ = 12386467 is a prime.

It is a super-2 number, since 2×12386531² = 306852300427922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12386494 and 12386503.

It is not a weakly prime, because it can be changed into another prime (12386131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6193265 + 6193266.

It is an arithmetic number, because the mean of its divisors is an integer number (6193266).

Almost surely, 2^12386531 is an apocalyptic number.

12386531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12386531 is an equidigital number, since it uses as much as digits as its factorization.

12386531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 12386531 is about 3519.4503832275. The cubic root of 12386531 is about 231.3750707902.

The spelling of 12386531 in words is "twelve million, three hundred eighty-six thousand, five hundred thirty-one".