340643013 has 4 divisors (see below), whose sum is σ = 454190688. Its totient is φ = 227095340.

The previous prime is 340643011. The next prime is 340643027. The reversal of 340643013 is 310346043.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 340643013 - 2¹ = 340643011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340643011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56773833 + ... + 56773838.

It is an arithmetic number, because the mean of its divisors is an integer number (113547672).

Almost surely, 2^340643013 is an apocalyptic number.

It is an amenable number.

340643013 is a deficient number, since it is larger than the sum of its proper divisors (113547675).

340643013 is a wasteful number, since it uses less digits than its factorization.

340643013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113547674.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 340643013 is about 18456.5168165610. The cubic root of 340643013 is about 698.3929207297.

Adding to 340643013 its reverse (310346043), we get a palindrome (650989056).

The spelling of 340643013 in words is "three hundred forty million, six hundred forty-three thousand, thirteen".