340345543 has 4 divisors (see below), whose sum is σ = 340466320. Its totient is φ = 340224768.

The previous prime is 340345541. The next prime is 340345547. The reversal of 340345543 is 345543043.

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

It is a cyclic number.

It is not a de Polignac number, because 340345543 - 2¹ = 340345541 is a prime.

It is a super-4 number, since 4×340345543⁴ (a number of 35 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340345541) 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, 56058 + ... + 61831.

It is an arithmetic number, because the mean of its divisors is an integer number (85116580).

Almost surely, 2^340345543 is an apocalyptic number.

340345543 is a deficient number, since it is larger than the sum of its proper divisors (120777).

340345543 is a wasteful number, since it uses less digits than its factorization.

340345543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120776.

The product of its (nonzero) digits is 43200, while the sum is 31.

The square root of 340345543 is about 18448.4563852914. The cubic root of 340345543 is about 698.1895686014.

Adding to 340345543 its reverse (345543043), we get a palindrome (685888586).

The spelling of 340345543 in words is "three hundred forty million, three hundred forty-five thousand, five hundred forty-three".