340420213 has 8 divisors (see below), whose sum is σ = 390208832. Its totient is φ = 290920896.

The previous prime is 340420187. The next prime is 340420237. The reversal of 340420213 is 312024043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 340420213 - 2⁵ = 340420181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340420273) 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, 69795 + ... + 74512.

It is an arithmetic number, because the mean of its divisors is an integer number (48776104).

Almost surely, 2^340420213 is an apocalyptic number.

It is an amenable number.

340420213 is a deficient number, since it is larger than the sum of its proper divisors (49788619).

340420213 is a wasteful number, since it uses less digits than its factorization.

340420213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144651.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 340420213 is about 18450.4800208558. The cubic root of 340420213 is about 698.2406245591.

Adding to 340420213 its reverse (312024043), we get a palindrome (652444256).

The spelling of 340420213 in words is "three hundred forty million, four hundred twenty thousand, two hundred thirteen".