215312041 has 4 divisors (see below), whose sum is σ = 246070912. Its totient is φ = 184553172.

The previous prime is 215312011. The next prime is 215312057. The reversal of 215312041 is 140213512.

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 215312041 - 2¹³ = 215303849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215312011) 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, 15379425 + ... + 15379438.

It is an arithmetic number, because the mean of its divisors is an integer number (61517728).

Almost surely, 2^215312041 is an apocalyptic number.

It is an amenable number.

215312041 is a deficient number, since it is larger than the sum of its proper divisors (30758871).

215312041 is an equidigital number, since it uses as much as digits as its factorization.

215312041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30758870.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 215312041 is about 14673.5149504132. The cubic root of 215312041 is about 599.3623234470.

Adding to 215312041 its reverse (140213512), we get a palindrome (355525553).

The spelling of 215312041 in words is "two hundred fifteen million, three hundred twelve thousand, forty-one".