340040423 has 8 divisors (see below), whose sum is σ = 346401360. Its totient is φ = 333699520.

The previous prime is 340040419. The next prime is 340040453. The reversal of 340040423 is 324040043.

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 340040423 - 2² = 340040419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 340040395 and 340040404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340040453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31733 + ... + 41073.

It is an arithmetic number, because the mean of its divisors is an integer number (43300170).

Almost surely, 2^340040423 is an apocalyptic number.

340040423 is a deficient number, since it is larger than the sum of its proper divisors (6360937).

340040423 is an equidigital number, since it uses as much as digits as its factorization.

340040423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10017.

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

The square root of 340040423 is about 18440.1850044949. The cubic root of 340040423 is about 697.9808637540.

Adding to 340040423 its reverse (324040043), we get a palindrome (664080466).

The spelling of 340040423 in words is "three hundred forty million, forty thousand, four hundred twenty-three".