105334991 has 2 divisors, whose sum is σ = 105334992. Its totient is φ = 105334990.

The previous prime is 105334981. The next prime is 105334997. The reversal of 105334991 is 199433501.

It is a strong prime.

It is an emirp because it is prime and its reverse (199433501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105334991 - 2⁶ = 105334927 is a prime.

It is a super-2 number, since 2×105334991² = 22190920657940162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105334997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52667495 + 52667496.

It is an arithmetic number, because the mean of its divisors is an integer number (52667496).

Almost surely, 2^105334991 is an apocalyptic number.

105334991 is a deficient number, since it is larger than the sum of its proper divisors (1).

105334991 is an equidigital number, since it uses as much as digits as its factorization.

105334991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 105334991 is about 10263.2836363417. The cubic root of 105334991 is about 472.2705749570.

The spelling of 105334991 in words is "one hundred five million, three hundred thirty-four thousand, nine hundred ninety-one".