105840347 has 2 divisors, whose sum is σ = 105840348. Its totient is φ = 105840346.

The previous prime is 105840331. The next prime is 105840349. The reversal of 105840347 is 743048501.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 105840347 - 2⁴ = 105840331 is a prime.

It is a super-2 number, since 2×105840347² = 22404358106160818, which contains 22 as substring.

Together with 105840349, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_6078173 and since 105840347 and 6078173 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (105840349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52920173 + 52920174.

It is an arithmetic number, because the mean of its divisors is an integer number (52920174).

Almost surely, 2^105840347 is an apocalyptic number.

105840347 is a deficient number, since it is larger than the sum of its proper divisors (1).

105840347 is an equidigital number, since it uses as much as digits as its factorization.

105840347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 105840347 is about 10287.8737842180. The cubic root of 105840347 is about 473.0246267276.

Adding to 105840347 its reverse (743048501), we get a palindrome (848888848).

The spelling of 105840347 in words is "one hundred five million, eight hundred forty thousand, three hundred forty-seven".