13312109 has 2 divisors, whose sum is σ = 13312110. Its totient is φ = 13312108.

The previous prime is 13312093. The next prime is 13312129. The reversal of 13312109 is 90121331.

It is an a-pointer prime, because the next prime (13312129) can be obtained adding 13312109 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8702500 + 4609609 = 2950^2 + 2147^2 .

It is a cyclic number.

It is not a de Polignac number, because 13312109 - 2⁴ = 13312093 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 (13312129) 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, 6656054 + 6656055.

It is an arithmetic number, because the mean of its divisors is an integer number (6656055).

Almost surely, 2^13312109 is an apocalyptic number.

It is an amenable number.

13312109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13312109 is an equidigital number, since it uses as much as digits as its factorization.

13312109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 13312109 is about 3648.5762976811. The cubic root of 13312109 is about 237.0003323299. Note that the first 3 decimals are identical.

The spelling of 13312109 in words is "thirteen million, three hundred twelve thousand, one hundred nine".