34105391 has 2 divisors, whose sum is σ = 34105392. Its totient is φ = 34105390.

The previous prime is 34105387. The next prime is 34105403. The reversal of 34105391 is 19350143.

It is a weak prime.

It is an emirp because it is prime and its reverse (19350143) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34105391 - 2² = 34105387 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 34105391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34107391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17052695 + 17052696.

It is an arithmetic number, because the mean of its divisors is an integer number (17052696).

Almost surely, 2^34105391 is an apocalyptic number.

34105391 is a deficient number, since it is larger than the sum of its proper divisors (1).

34105391 is an equidigital number, since it uses as much as digits as its factorization.

34105391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 34105391 is about 5839.9821061370. The cubic root of 34105391 is about 324.2955661640.

The spelling of 34105391 in words is "thirty-four million, one hundred five thousand, three hundred ninety-one".