12506311 has 2 divisors, whose sum is σ = 12506312. Its totient is φ = 12506310.

The previous prime is 12506303. The next prime is 12506323. The reversal of 12506311 is 11360521.

It is a weak prime.

It is an emirp because it is prime and its reverse (11360521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12506311 - 2³ = 12506303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12506341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253155 + 6253156.

It is an arithmetic number, because the mean of its divisors is an integer number (6253156).

Almost surely, 2^12506311 is an apocalyptic number.

12506311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12506311 is an equidigital number, since it uses as much as digits as its factorization.

12506311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 12506311 is about 3536.4263034877. The cubic root of 12506311 is about 232.1184925322.

Adding to 12506311 its reverse (11360521), we get a palindrome (23866832).

The spelling of 12506311 in words is "twelve million, five hundred six thousand, three hundred eleven".