12240913 has 2 divisors, whose sum is σ = 12240914. Its totient is φ = 12240912.

The previous prime is 12240911. The next prime is 12240937. The reversal of 12240913 is 31904221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8661249 + 3579664 = 2943^2 + 1892^2 .

It is a cyclic number.

It is not a de Polignac number, because 12240913 - 2¹ = 12240911 is a prime.

Together with 12240911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12240911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6120456 + 6120457.

It is an arithmetic number, because the mean of its divisors is an integer number (6120457).

Almost surely, 2^12240913 is an apocalyptic number.

It is an amenable number.

12240913 is a deficient number, since it is larger than the sum of its proper divisors (1).

12240913 is an equidigital number, since it uses as much as digits as its factorization.

12240913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 12240913 is about 3498.7016163143. The cubic root of 12240913 is about 230.4648004559.

The spelling of 12240913 in words is "twelve million, two hundred forty thousand, nine hundred thirteen".