340204020343 has 4 divisors (see below), whose sum is σ = 371131658568. Its totient is φ = 309276382120.

The previous prime is 340204020319. The next prime is 340204020371. The reversal of 340204020343 is 343020402043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343020402043 = 11 ⋅31183672913.

It is a cyclic number.

It is not a de Polignac number, because 340204020343 - 2²⁹ = 339667149431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340204026343) 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, 15463819096 + ... + 15463819117.

It is an arithmetic number, because the mean of its divisors is an integer number (92782914642).

Almost surely, 2^340204020343 is an apocalyptic number.

340204020343 is a deficient number, since it is larger than the sum of its proper divisors (30927638225).

340204020343 is a wasteful number, since it uses less digits than its factorization.

340204020343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30927638224.

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 340204020343 its reverse (343020402043), we get a palindrome (683224422386).

The spelling of 340204020343 in words is "three hundred forty billion, two hundred four million, twenty thousand, three hundred forty-three".