340215 has 16 divisors (see below), whose sum is σ = 559968. Its totient is φ = 176256.

The previous prime is 340211. The next prime is 340237. The reversal of 340215 is 512043.

It is not a de Polignac number, because 340215 - 2² = 340211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 340194 and 340203.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340215.

It is not an unprimeable number, because it can be changed into a prime (340211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249 + ... + 861.

It is an arithmetic number, because the mean of its divisors is an integer number (34998).

2³⁴⁰²¹⁵ is an apocalyptic number.

340215 is a deficient number, since it is larger than the sum of its proper divisors (219753).

340215 is a wasteful number, since it uses less digits than its factorization.

340215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 340215 is about 583.2795213275. The cubic root of 340215 is about 69.8100291279.

Adding to 340215 its reverse (512043), we get a palindrome (852258).

It can be divided in two parts, 340 and 215, that added together give a palindrome (555).

The spelling of 340215 in words is "three hundred forty thousand, two hundred fifteen".