340131665 has 8 divisors (see below), whose sum is σ = 432167400. Its totient is φ = 256099072.

The previous prime is 340131661. The next prime is 340131689. The reversal of 340131665 is 566131043.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 51437584 + 288694081 = 7172^2 + 16991^2 .

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 340131665 - 2² = 340131661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (340131661) 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, 2000690 + ... + 2000859.

It is an arithmetic number, because the mean of its divisors is an integer number (54020925).

Almost surely, 2^340131665 is an apocalyptic number.

It is an amenable number.

340131665 is a deficient number, since it is larger than the sum of its proper divisors (92035735).

340131665 is a wasteful number, since it uses less digits than its factorization.

340131665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4001571.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 340131665 is about 18442.6588375971. The cubic root of 340131665 is about 698.0432871899.

The spelling of 340131665 in words is "three hundred forty million, one hundred thirty-one thousand, six hundred sixty-five".