215368229 has 4 divisors (see below), whose sum is σ = 215537376. Its totient is φ = 215199084.

The previous prime is 215368213. The next prime is 215368261. The reversal of 215368229 is 922863512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 215368229 - 2⁴ = 215368213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215368192 and 215368201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215368289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82649 + ... + 85214.

It is an arithmetic number, because the mean of its divisors is an integer number (53884344).

Almost surely, 2^215368229 is an apocalyptic number.

It is an amenable number.

215368229 is a deficient number, since it is larger than the sum of its proper divisors (169147).

215368229 is a wasteful number, since it uses less digits than its factorization.

215368229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169146.

The product of its digits is 51840, while the sum is 38.

The square root of 215368229 is about 14675.4294315362. The cubic root of 215368229 is about 599.4144556007.

The spelling of 215368229 in words is "two hundred fifteen million, three hundred sixty-eight thousand, two hundred twenty-nine".