340142323 has 8 divisors (see below), whose sum is σ = 351376256. Its totient is φ = 328924800.

The previous prime is 340142311. The next prime is 340142333. The reversal of 340142323 is 323241043.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 340142323 - 2⁵ = 340142291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340142294 and 340142303.

It is not an unprimeable number, because it can be changed into a prime (340142303) 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 7 ways as a sum of consecutive naturals, for example, 49243 + ... + 55723.

It is an arithmetic number, because the mean of its divisors is an integer number (43922032).

Almost surely, 2^340142323 is an apocalyptic number.

340142323 is a deficient number, since it is larger than the sum of its proper divisors (11233933).

340142323 is a wasteful number, since it uses less digits than its factorization.

340142323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 340142323 is about 18442.9477849936. The cubic root of 340142323 is about 698.0505781583.

Adding to 340142323 its reverse (323241043), we get a palindrome (663383366).

The spelling of 340142323 in words is "three hundred forty million, one hundred forty-two thousand, three hundred twenty-three".