340609237 has 2 divisors, whose sum is σ = 340609238. Its totient is φ = 340609236.

The previous prime is 340609207. The next prime is 340609267. The reversal of 340609237 is 732906043.

It is a balanced prime because it is at equal distance from previous prime (340609207) and next prime (340609267).

It can be written as a sum of positive squares in only one way, i.e., 340070481 + 538756 = 18441^2 + 734^2 .

It is an emirp because it is prime and its reverse (732906043) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340609237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340609207) 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, 170304618 + 170304619.

It is an arithmetic number, because the mean of its divisors is an integer number (170304619).

Almost surely, 2^340609237 is an apocalyptic number.

It is an amenable number.

340609237 is a deficient number, since it is larger than the sum of its proper divisors (1).

340609237 is an equidigital number, since it uses as much as digits as its factorization.

340609237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 340609237 is about 18455.6017783219. The cubic root of 340609237 is about 698.3698372297.

The spelling of 340609237 in words is "three hundred forty million, six hundred nine thousand, two hundred thirty-seven".