340221434 has 8 divisors (see below), whose sum is σ = 583236768. Its totient is φ = 145809180.

The previous prime is 340221433. The next prime is 340221439. The reversal of 340221434 is 434122043.

340221434 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (340221433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12150752 + ... + 12150779.

It is an arithmetic number, because the mean of its divisors is an integer number (72904596).

Almost surely, 2^340221434 is an apocalyptic number.

340221434 is a deficient number, since it is larger than the sum of its proper divisors (243015334).

340221434 is a wasteful number, since it uses less digits than its factorization.

340221434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24301540.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 340221434 is about 18445.0924096357. The cubic root of 340221434 is about 698.1046919755.

Adding to 340221434 its reverse (434122043), we get a palindrome (774343477).

The spelling of 340221434 in words is "three hundred forty million, two hundred twenty-one thousand, four hundred thirty-four".