340758281 has 2 divisors, whose sum is σ = 340758282. Its totient is φ = 340758280.

The previous prime is 340758269. The next prime is 340758287. The reversal of 340758281 is 182857043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272778256 + 67980025 = 16516^2 + 8245^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340758281 is a prime.

It is a super-2 number, since 2×340758281² = 232232412140149922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (340758287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170379140 + 170379141.

It is an arithmetic number, because the mean of its divisors is an integer number (170379141).

Almost surely, 2^340758281 is an apocalyptic number.

It is an amenable number.

340758281 is a deficient number, since it is larger than the sum of its proper divisors (1).

340758281 is an equidigital number, since it uses as much as digits as its factorization.

340758281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 340758281 is about 18459.6392434955. The cubic root of 340758281 is about 698.4716867434.

The spelling of 340758281 in words is "three hundred forty million, seven hundred fifty-eight thousand, two hundred eighty-one".