215013 has 4 divisors (see below), whose sum is σ = 286688. Its totient is φ = 143340.

The previous prime is 214993. The next prime is 215051. The reversal of 215013 is 310512.

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 not a de Polignac number, because 215013 - 2¹⁰ = 213989 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 215013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35833 + ... + 35838.

It is an arithmetic number, because the mean of its divisors is an integer number (71672).

2²¹⁵⁰¹³ is an apocalyptic number.

It is an amenable number.

215013 is a deficient number, since it is larger than the sum of its proper divisors (71675).

215013 is an equidigital number, since it uses as much as digits as its factorization.

215013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71674.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 215013 is about 463.6949428234. The cubic root of 215013 is about 59.9084715578.

Adding to 215013 its reverse (310512), we get a palindrome (525525).

The spelling of 215013 in words is "two hundred fifteen thousand, thirteen".