340780337 has 2 divisors, whose sum is σ = 340780338. Its totient is φ = 340780336.

The previous prime is 340780313. The next prime is 340780339. The reversal of 340780337 is 733087043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340365601 + 414736 = 18449^2 + 644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340780337 is a prime.

It is a super-2 number, since 2×340780337² = 232262476171667138, which contains 22 as substring.

Together with 340780339, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 340780297 and 340780306.

It is not a weakly prime, because it can be changed into another prime (340780339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170390168 + 170390169.

It is an arithmetic number, because the mean of its divisors is an integer number (170390169).

Almost surely, 2^340780337 is an apocalyptic number.

It is an amenable number.

340780337 is a deficient number, since it is larger than the sum of its proper divisors (1).

340780337 is an equidigital number, since it uses as much as digits as its factorization.

340780337 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 340780337 is about 18460.2366452871. The cubic root of 340780337 is about 698.4867562321.

The spelling of 340780337 in words is "three hundred forty million, seven hundred eighty thousand, three hundred thirty-seven".