340215323 has 4 divisors (see below), whose sum is σ = 388817520. Its totient is φ = 291613128.

The previous prime is 340215313. The next prime is 340215331. The reversal of 340215323 is 323512043.

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 340215323 - 2⁴ = 340215307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340215313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24301088 + ... + 24301101.

It is an arithmetic number, because the mean of its divisors is an integer number (97204380).

Almost surely, 2^340215323 is an apocalyptic number.

340215323 is a deficient number, since it is larger than the sum of its proper divisors (48602197).

340215323 is an equidigital number, since it uses as much as digits as its factorization.

340215323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48602196.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 340215323 is about 18444.9267550728. The cubic root of 340215323 is about 698.1005122043.

Adding to 340215323 its reverse (323512043), we get a palindrome (663727366).

The spelling of 340215323 in words is "three hundred forty million, two hundred fifteen thousand, three hundred twenty-three".