340402361 has 4 divisors (see below), whose sum is σ = 366587172. Its totient is φ = 314217552.

The previous prime is 340402343. The next prime is 340402367. The reversal of 340402361 is 163204043.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25694761 + 314707600 = 5069^2 + 17740^2 .

It is a cyclic number.

It is not a de Polignac number, because 340402361 - 2¹⁰ = 340401337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340402367) 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 3 ways as a sum of consecutive naturals, for example, 13092386 + ... + 13092411.

It is an arithmetic number, because the mean of its divisors is an integer number (91646793).

Almost surely, 2^340402361 is an apocalyptic number.

It is an amenable number.

340402361 is a deficient number, since it is larger than the sum of its proper divisors (26184811).

340402361 is a wasteful number, since it uses less digits than its factorization.

340402361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26184810.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 340402361 is about 18449.9962330619. The cubic root of 340402361 is about 698.2284188507.

The spelling of 340402361 in words is "three hundred forty million, four hundred two thousand, three hundred sixty-one".