34240391 has 2 divisors, whose sum is σ = 34240392. Its totient is φ = 34240390.

The previous prime is 34240319. The next prime is 34240403. The reversal of 34240391 is 19304243.

34240391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (34240319) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 34240391 - 2¹⁰ = 34239367 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 34240391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34240301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17120195 + 17120196.

It is an arithmetic number, because the mean of its divisors is an integer number (17120196).

Almost surely, 2^34240391 is an apocalyptic number.

34240391 is a deficient number, since it is larger than the sum of its proper divisors (1).

34240391 is an equidigital number, since it uses as much as digits as its factorization.

34240391 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 26.

The square root of 34240391 is about 5851.5289454979. The cubic root of 34240391 is about 324.7228912086.

The spelling of 34240391 in words is "thirty-four million, two hundred forty thousand, three hundred ninety-one".