12515311 has 2 divisors, whose sum is σ = 12515312. Its totient is φ = 12515310.

The previous prime is 12515203. The next prime is 12515317. The reversal of 12515311 is 11351521.

It is a strong prime.

It is an emirp because it is prime and its reverse (11351521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12515311 - 2⁷ = 12515183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12515317) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6257655 + 6257656.

It is an arithmetic number, because the mean of its divisors is an integer number (6257656).

Almost surely, 2^12515311 is an apocalyptic number.

12515311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12515311 is an equidigital number, since it uses as much as digits as its factorization.

12515311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 150, while the sum is 19.

The square root of 12515311 is about 3537.6985456650. The cubic root of 12515311 is about 232.1741595073.

Adding to 12515311 its reverse (11351521), we get a palindrome (23866832).

The spelling of 12515311 in words is "twelve million, five hundred fifteen thousand, three hundred eleven".