215315013 has 32 divisors (see below), whose sum is σ = 311731200. Its totient is φ = 131694336.

The previous prime is 215314999. The next prime is 215315017. The reversal of 215315013 is 310513512.

215315013 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 215315013 - 2⁴ = 215314997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215315017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 490248 + ... + 490686.

It is an arithmetic number, because the mean of its divisors is an integer number (9741600).

Almost surely, 2^215315013 is an apocalyptic number.

It is an amenable number.

215315013 is a deficient number, since it is larger than the sum of its proper divisors (96416187).

215315013 is a wasteful number, since it uses less digits than its factorization.

215315013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 215315013 is about 14673.6162209593. The cubic root of 215315013 is about 599.3650811448.

Adding to 215315013 its reverse (310513512), we get a palindrome (525828525).

The spelling of 215315013 in words is "two hundred fifteen million, three hundred fifteen thousand, thirteen".