340788361 has 2 divisors, whose sum is σ = 340788362. Its totient is φ = 340788360.

The previous prime is 340788337. The next prime is 340788397. The reversal of 340788361 is 163887043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205205625 + 135582736 = 14325^2 + 11644^2 .

It is an emirp because it is prime and its reverse (163887043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340788361 - 2¹³ = 340780169 is a prime.

It is a super-2 number, since 2×340788361² = 232273413986132642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340780361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170394180 + 170394181.

It is an arithmetic number, because the mean of its divisors is an integer number (170394181).

Almost surely, 2^340788361 is an apocalyptic number.

It is an amenable number.

340788361 is a deficient number, since it is larger than the sum of its proper divisors (1).

340788361 is an equidigital number, since it uses as much as digits as its factorization.

340788361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 340788361 is about 18460.4539759996. The cubic root of 340788361 is about 698.4922383693.

The spelling of 340788361 in words is "three hundred forty million, seven hundred eighty-eight thousand, three hundred sixty-one".