13109843 has 2 divisors, whose sum is σ = 13109844. Its totient is φ = 13109842.

The previous prime is 13109809. The next prime is 13109861. The reversal of 13109843 is 34890131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13109843 - 2⁶ = 13109779 is a prime.

It is not a weakly prime, because it can be changed into another prime (13109443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6554921 + 6554922.

It is an arithmetic number, because the mean of its divisors is an integer number (6554922).

Almost surely, 2^13109843 is an apocalyptic number.

13109843 is a deficient number, since it is larger than the sum of its proper divisors (1).

13109843 is an equidigital number, since it uses as much as digits as its factorization.

13109843 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13109843 is about 3620.7517175305. The cubic root of 13109843 is about 235.7938626592.

Adding to 13109843 its reverse (34890131), we get a palindrome (47999974).

The spelling of 13109843 in words is "thirteen million, one hundred nine thousand, eight hundred forty-three".