12312511 has 2 divisors, whose sum is σ = 12312512. Its totient is φ = 12312510.

The previous prime is 12312497. The next prime is 12312557. The reversal of 12312511 is 11521321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12312511 - 2¹³ = 12304319 is a prime.

It is a zygodrome in base 6.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12312571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156255 + 6156256.

It is an arithmetic number, because the mean of its divisors is an integer number (6156256).

Almost surely, 2^12312511 is an apocalyptic number.

12312511 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312511 is an equidigital number, since it uses as much as digits as its factorization.

12312511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60, while the sum is 16.

The square root of 12312511 is about 3508.9187793393. The cubic root of 12312511 is about 230.9132624134.

Adding to 12312511 its reverse (11521321), we get a palindrome (23833832).

The spelling of 12312511 in words is "twelve million, three hundred twelve thousand, five hundred eleven".