215343 has 12 divisors (see below), whose sum is σ = 316368. Its totient is φ = 141120.

The previous prime is 215329. The next prime is 215351. The reversal of 215343 is 343512.

It is not a de Polignac number, because 215343 - 2⁶ = 215279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215353) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 471 + ... + 807.

It is an arithmetic number, because the mean of its divisors is an integer number (26364).

2²¹⁵³⁴³ is an apocalyptic number.

215343 is a deficient number, since it is larger than the sum of its proper divisors (101025).

215343 is a wasteful number, since it uses less digits than its factorization.

215343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414 (or 411 counting only the distinct ones).

The product of its digits is 360, while the sum is 18.

The square root of 215343 is about 464.0506437879. The cubic root of 215343 is about 59.9391048840.

Adding to 215343 its reverse (343512), we get a palindrome (558855).

The spelling of 215343 in words is "two hundred fifteen thousand, three hundred forty-three".