215303223 has 8 divisors (see below), whose sum is σ = 287231728. Its totient is φ = 143455104.

The previous prime is 215303219. The next prime is 215303239. The reversal of 215303223 is 322303512.

215303223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 215303223 - 2² = 215303219 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 215303223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215303293) 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, 13540 + ... + 24777.

It is an arithmetic number, because the mean of its divisors is an integer number (35903966).

Almost surely, 2^215303223 is an apocalyptic number.

215303223 is a deficient number, since it is larger than the sum of its proper divisors (71928505).

215303223 is a wasteful number, since it uses less digits than its factorization.

215303223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40193.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 215303223 is about 14673.2144739999. The cubic root of 215303223 is about 599.3541411378.

Adding to 215303223 its reverse (322303512), we get a palindrome (537606735).

It can be divided in two parts, 21530 and 3223, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 215303223 in words is "two hundred fifteen million, three hundred three thousand, two hundred twenty-three".