340407293 has 2 divisors, whose sum is σ = 340407294. Its totient is φ = 340407292.

The previous prime is 340407283. The next prime is 340407313. The reversal of 340407293 is 392704043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304921444 + 35485849 = 17462^2 + 5957^2 .

It is an emirp because it is prime and its reverse (392704043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340407293 - 2²⁰ = 339358717 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340407233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170203646 + 170203647.

It is an arithmetic number, because the mean of its divisors is an integer number (170203647).

Almost surely, 2^340407293 is an apocalyptic number.

It is an amenable number.

340407293 is a deficient number, since it is larger than the sum of its proper divisors (1).

340407293 is an equidigital number, since it uses as much as digits as its factorization.

340407293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 340407293 is about 18450.1298911417. The cubic root of 340407293 is about 698.2317909836.

The spelling of 340407293 in words is "three hundred forty million, four hundred seven thousand, two hundred ninety-three".