340131305 has 8 divisors (see below), whose sum is σ = 408408000. Its totient is φ = 271938096.

The previous prime is 340131301. The next prime is 340131313. The reversal of 340131305 is 503131043.

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 340131305 - 2² = 340131301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340131301) 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 7 ways as a sum of consecutive naturals, for example, 11525 + ... + 28514.

It is an arithmetic number, because the mean of its divisors is an integer number (51051000).

Almost surely, 2^340131305 is an apocalyptic number.

It is an amenable number.

340131305 is a deficient number, since it is larger than the sum of its proper divisors (68276695).

340131305 is a wasteful number, since it uses less digits than its factorization.

340131305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41743.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 340131305 is about 18442.6490776136. The cubic root of 340131305 is about 698.0430409170.

Adding to 340131305 its reverse (503131043), we get a palindrome (843262348).

The spelling of 340131305 in words is "three hundred forty million, one hundred thirty-one thousand, three hundred five".