340520212 has 12 divisors (see below), whose sum is σ = 597816436. Its totient is φ = 169715520.

The previous prime is 340520209. The next prime is 340520231. The reversal of 340520212 is 212025043.

It can be written as a sum of positive squares in 2 ways, for example, as 113294736 + 227225476 = 10644^2 + 15074^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 340520212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134739 + ... + 137242.

Almost surely, 2^340520212 is an apocalyptic number.

It is an amenable number.

340520212 is a deficient number, since it is larger than the sum of its proper divisors (257296224).

340520212 is a wasteful number, since it uses less digits than its factorization.

340520212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272298 (or 272296 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 340520212 is about 18453.1897513682. The cubic root of 340520212 is about 698.3089876447.

Adding to 340520212 its reverse (212025043), we get a palindrome (552545255).

The spelling of 340520212 in words is "three hundred forty million, five hundred twenty thousand, two hundred twelve".