215223241 has 4 divisors (see below), whose sum is σ = 226550800. Its totient is φ = 203895684.

The previous prime is 215223221. The next prime is 215223277. The reversal of 215223241 is 142322512.

It is a happy number.

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 215223241 - 2²³ = 206834633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215223221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5663751 + ... + 5663788.

It is an arithmetic number, because the mean of its divisors is an integer number (56637700).

Almost surely, 2^215223241 is an apocalyptic number.

It is an amenable number.

215223241 is a deficient number, since it is larger than the sum of its proper divisors (11327559).

215223241 is a wasteful number, since it uses less digits than its factorization.

215223241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11327558.

The product of its digits is 960, while the sum is 22.

The square root of 215223241 is about 14670.4887784968. The cubic root of 215223241 is about 599.2799148450.

Adding to 215223241 its reverse (142322512), we get a palindrome (357545753).

The spelling of 215223241 in words is "two hundred fifteen million, two hundred twenty-three thousand, two hundred forty-one".