212315 has 4 divisors (see below), whose sum is σ = 254784. Its totient is φ = 169848.

The previous prime is 212297. The next prime is 212353. The reversal of 212315 is 513212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212315 - 2¹⁰ = 211291 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212315.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21227 + ... + 21236.

It is an arithmetic number, because the mean of its divisors is an integer number (63696).

2²¹²³¹⁵ is an apocalyptic number.

212315 is a deficient number, since it is larger than the sum of its proper divisors (42469).

212315 is an equidigital number, since it uses as much as digits as its factorization.

212315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42468.

The product of its digits is 60, while the sum is 14.

The square root of 212315 is about 460.7765184989. The cubic root of 212315 is about 59.6568373615.

Adding to 212315 its reverse (513212), we get a palindrome (725527).

The spelling of 212315 in words is "two hundred twelve thousand, three hundred fifteen".