340105237 has 2 divisors, whose sum is σ = 340105238. Its totient is φ = 340105236.

The previous prime is 340105211. The next prime is 340105289. The reversal of 340105237 is 732501043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184579396 + 155525841 = 13586^2 + 12471^2 .

It is an emirp because it is prime and its reverse (732501043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340105237 - 2⁷ = 340105109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340105837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170052618 + 170052619.

It is an arithmetic number, because the mean of its divisors is an integer number (170052619).

Almost surely, 2^340105237 is an apocalyptic number.

It is an amenable number.

340105237 is a deficient number, since it is larger than the sum of its proper divisors (1).

340105237 is an equidigital number, since it uses as much as digits as its factorization.

340105237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 340105237 is about 18441.9423326286. The cubic root of 340105237 is about 698.0252075581.

The spelling of 340105237 in words is "three hundred forty million, one hundred five thousand, two hundred thirty-seven".