340433213 has 4 divisors (see below), whose sum is σ = 340506720. Its totient is φ = 340359708.

The previous prime is 340433207. The next prime is 340433239. The reversal of 340433213 is 312334043.

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 340433213 - 2¹⁴ = 340416829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340433293) 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, 29303 + ... + 39236.

It is an arithmetic number, because the mean of its divisors is an integer number (85126680).

Almost surely, 2^340433213 is an apocalyptic number.

It is an amenable number.

340433213 is a deficient number, since it is larger than the sum of its proper divisors (73507).

340433213 is an equidigital number, since it uses as much as digits as its factorization.

340433213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73506.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 340433213 is about 18450.8323118498. The cubic root of 340433213 is about 698.2495126061.

Adding to 340433213 its reverse (312334043), we get a palindrome (652767256).

The spelling of 340433213 in words is "three hundred forty million, four hundred thirty-three thousand, two hundred thirteen".