340387813 has 8 divisors (see below), whose sum is σ = 344204288. Its totient is φ = 336589344.

The previous prime is 340387811. The next prime is 340387823. The reversal of 340387813 is 318783043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340387813 - 2¹ = 340387811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340387811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35470 + ... + 44032.

It is an arithmetic number, because the mean of its divisors is an integer number (43025536).

Almost surely, 2^340387813 is an apocalyptic number.

It is an amenable number.

340387813 is a deficient number, since it is larger than the sum of its proper divisors (3816475).

340387813 is a wasteful number, since it uses less digits than its factorization.

340387813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9003.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 340387813 is about 18449.6019740264. The cubic root of 340387813 is about 698.2184718264.

The spelling of 340387813 in words is "three hundred forty million, three hundred eighty-seven thousand, eight hundred thirteen".