215240341 has 4 divisors (see below), whose sum is σ = 226568800. Its totient is φ = 203911884.

The previous prime is 215240329. The next prime is 215240351. The reversal of 215240341 is 143042512.

215240341 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-215240341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215240351) 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, 5664201 + ... + 5664238.

It is an arithmetic number, because the mean of its divisors is an integer number (56642200).

Almost surely, 2^215240341 is an apocalyptic number.

It is an amenable number.

215240341 is a deficient number, since it is larger than the sum of its proper divisors (11328459).

215240341 is a wasteful number, since it uses less digits than its factorization.

215240341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11328458.

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

The square root of 215240341 is about 14671.0715695889. The cubic root of 215240341 is about 599.2957858311.

Adding to 215240341 its reverse (143042512), we get a palindrome (358282853).

The spelling of 215240341 in words is "two hundred fifteen million, two hundred forty thousand, three hundred forty-one".