340404212 has 12 divisors (see below), whose sum is σ = 595950180. Its totient is φ = 170132736.

The previous prime is 340404203. The next prime is 340404227. The reversal of 340404212 is 212404043.

It can be written as a sum of positive squares in 2 ways, for example, as 77510416 + 262893796 = 8804^2 + 16214^2 .

It is a super-3 number, since 3×340404212³ (a number of 27 digits) contains 333 as substring.

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, 5387 + ... + 26642.

It is an arithmetic number, because the mean of its divisors is an integer number (49662515).

Almost surely, 2^340404212 is an apocalyptic number.

It is an amenable number.

340404212 is a deficient number, since it is larger than the sum of its proper divisors (255545968).

340404212 is a wasteful number, since it uses less digits than its factorization.

340404212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34690 (or 34688 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 340404212 is about 18450.0463956056. The cubic root of 340404212 is about 698.2296844300.

Adding to 340404212 its reverse (212404043), we get a palindrome (552808255).

The spelling of 340404212 in words is "three hundred forty million, four hundred four thousand, two hundred twelve".