340968321 has 12 divisors (see below), whose sum is σ = 493685140. Its totient is φ = 226769760.

The previous prime is 340968311. The next prime is 340968359. The reversal of 340968321 is 123869043.

It can be written as a sum of positive squares in 2 ways, for example, as 23415921 + 317552400 = 4839^2 + 17820^2 .

It is not a de Polignac number, because 340968321 - 2¹¹ = 340966273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340968311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41206 + ... + 48783.

Almost surely, 2^340968321 is an apocalyptic number.

It is an amenable number.

340968321 is a deficient number, since it is larger than the sum of its proper divisors (152716819).

340968321 is a wasteful number, since it uses less digits than its factorization.

340968321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90416 (or 90413 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 340968321 is about 18465.3275356816. The cubic root of 340968321 is about 698.6151675905.

The spelling of 340968321 in words is "three hundred forty million, nine hundred sixty-eight thousand, three hundred twenty-one".