340520312 has 32 divisors (see below), whose sum is σ = 698295600. Its totient is φ = 154387200.

The previous prime is 340520309. The next prime is 340520317. The reversal of 340520312 is 213025043.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340520317) 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, 31262 + ... + 40722.

Almost surely, 2^340520312 is an apocalyptic number.

It is an amenable number.

340520312 is an abundant number, since it is smaller than the sum of its proper divisors (357775288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

340520312 is a wasteful number, since it uses less digits than its factorization.

340520312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9887 (or 9883 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 340520312 is about 18453.1924609266. The cubic root of 340520312 is about 698.3090560017.

Adding to 340520312 its reverse (213025043), we get a palindrome (553545355).

The spelling of 340520312 in words is "three hundred forty million, five hundred twenty thousand, three hundred twelve".