340140212 has 6 divisors (see below), whose sum is σ = 595245378. Its totient is φ = 170070104.

The previous prime is 340140187. The next prime is 340140287. The reversal of 340140212 is 212041043.

It can be written as a sum of positive squares in only one way, i.e., 293299876 + 46840336 = 17126^2 + 6844^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42517523 + ... + 42517530.

It is an arithmetic number, because the mean of its divisors is an integer number (99207563).

Almost surely, 2^340140212 is an apocalyptic number.

It is an amenable number.

340140212 is a deficient number, since it is larger than the sum of its proper divisors (255105166).

340140212 is a wasteful number, since it uses less digits than its factorization.

340140212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85035057 (or 85035055 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 340140212 is about 18442.8905543573. The cubic root of 340140212 is about 698.0491340688.

Adding to 340140212 its reverse (212041043), we get a palindrome (552181255).

The spelling of 340140212 in words is "three hundred forty million, one hundred forty thousand, two hundred twelve".