13230661 has 2 divisors, whose sum is σ = 13230662. Its totient is φ = 13230660.

The previous prime is 13230647. The next prime is 13230667. The reversal of 13230661 is 16603231.

13230661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9548100 + 3682561 = 3090^2 + 1919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13230661 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 (13230667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615330 + 6615331.

It is an arithmetic number, because the mean of its divisors is an integer number (6615331).

Almost surely, 2^13230661 is an apocalyptic number.

It is an amenable number.

13230661 is a deficient number, since it is larger than the sum of its proper divisors (1).

13230661 is an equidigital number, since it uses as much as digits as its factorization.

13230661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 13230661 is about 3637.3975586950. The cubic root of 13230661 is about 236.5159937157.

Adding to 13230661 its reverse (16603231), we get a palindrome (29833892).

The spelling of 13230661 in words is "thirteen million, two hundred thirty thousand, six hundred sixty-one".