215305041 has 16 divisors (see below), whose sum is σ = 328300544. Its totient is φ = 122950224.

The previous prime is 215305037. The next prime is 215305061. The reversal of 215305041 is 140503512.

215305041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 215305041 - 2² = 215305037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215304999 and 215305017.

It is not an unprimeable number, because it can be changed into a prime (215305021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45786 + ... + 50268.

It is an arithmetic number, because the mean of its divisors is an integer number (20518784).

Almost surely, 2^215305041 is an apocalyptic number.

215305041 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

215305041 is a deficient number, since it is larger than the sum of its proper divisors (112995503).

215305041 is a wasteful number, since it uses less digits than its factorization.

215305041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6780.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 215305041 is about 14673.2764234850. The cubic root of 215305041 is about 599.3558280962.

Adding to 215305041 its reverse (140503512), we get a palindrome (355808553).

The spelling of 215305041 in words is "two hundred fifteen million, three hundred five thousand, forty-one".