12240311 has 2 divisors, whose sum is σ = 12240312. Its totient is φ = 12240310.

The previous prime is 12240299. The next prime is 12240341. The reversal of 12240311 is 11304221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12240311 - 2¹⁴ = 12223927 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 (12240341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6120155 + 6120156.

It is an arithmetic number, because the mean of its divisors is an integer number (6120156).

Almost surely, 2^12240311 is an apocalyptic number.

12240311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12240311 is an equidigital number, since it uses as much as digits as its factorization.

12240311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12240311 is about 3498.6155833415. The cubic root of 12240311 is about 230.4610223585.

Adding to 12240311 its reverse (11304221), we get a palindrome (23544532).

The spelling of 12240311 in words is "twelve million, two hundred forty thousand, three hundred eleven".