340042223 has 4 divisors (see below), whose sum is σ = 346458168. Its totient is φ = 333626280.

The previous prime is 340042207. The next prime is 340042231. The reversal of 340042223 is 322240043.

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 340042223 - 2⁴ = 340042207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340042195 and 340042204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340042273) 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, 3207893 + ... + 3207998.

It is an arithmetic number, because the mean of its divisors is an integer number (86614542).

Almost surely, 2^340042223 is an apocalyptic number.

340042223 is a deficient number, since it is larger than the sum of its proper divisors (6415945).

340042223 is an equidigital number, since it uses as much as digits as its factorization.

340042223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6415944.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 340042223 is about 18440.2338108821. The cubic root of 340042223 is about 697.9820953363.

Adding to 340042223 its reverse (322240043), we get a palindrome (662282266).

The spelling of 340042223 in words is "three hundred forty million, forty-two thousand, two hundred twenty-three".