340403211 has 6 divisors (see below), whose sum is σ = 491693540. Its totient is φ = 226935468.

The previous prime is 340403209. The next prime is 340403227. The reversal of 340403211 is 112304043.

340403211 is a `hidden beast` number, since 340 + 4 + 0 + 321 + 1 = 666.

It is not a de Polignac number, because 340403211 - 2¹ = 340403209 is a prime.

It is a super-2 number, since 2×340403211² = 231748692118221042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340403201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18911281 + ... + 18911298.

Almost surely, 2^340403211 is an apocalyptic number.

340403211 is a deficient number, since it is larger than the sum of its proper divisors (151290329).

340403211 is a wasteful number, since it uses less digits than its factorization.

340403211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37822585 (or 37822582 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 340403211 is about 18450.0192682826. The cubic root of 340403211 is about 698.2290000195.

Adding to 340403211 its reverse (112304043), we get a palindrome (452707254).

It can be divided in two parts, 3404032 and 11, that added together give a palindrome (3404043).

The spelling of 340403211 in words is "three hundred forty million, four hundred three thousand, two hundred eleven".