340140293 has 2 divisors, whose sum is σ = 340140294. Its totient is φ = 340140292.

The previous prime is 340140287. The next prime is 340140323. The reversal of 340140293 is 392041043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212518084 + 127622209 = 14578^2 + 11297^2 .

It is a cyclic number.

It is not a de Polignac number, because 340140293 - 2⁸ = 340140037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340142293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170070146 + 170070147.

It is an arithmetic number, because the mean of its divisors is an integer number (170070147).

Almost surely, 2^340140293 is an apocalyptic number.

It is an amenable number.

340140293 is a deficient number, since it is larger than the sum of its proper divisors (1).

340140293 is an equidigital number, since it uses as much as digits as its factorization.

340140293 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 340140293 is about 18442.8927503253. The cubic root of 340140293 is about 698.0491894793.

The spelling of 340140293 in words is "three hundred forty million, one hundred forty thousand, two hundred ninety-three".