103215 has 16 divisors (see below), whose sum is σ = 188928. Its totient is φ = 47136.

The previous prime is 103183. The next prime is 103217. The reversal of 103215 is 512301.

It is not a de Polignac number, because 103215 - 2⁵ = 103183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103215.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 103215.

It is not an unprimeable number, because it can be changed into a prime (103217) 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, 387 + ... + 596.

It is an arithmetic number, because the mean of its divisors is an integer number (11808).

2¹⁰³²¹⁵ is an apocalyptic number.

103215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

103215 is a deficient number, since it is larger than the sum of its proper divisors (85713).

103215 is an equidigital number, since it uses as much as digits as its factorization.

103215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

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

The square root of 103215 is about 321.2709137161. The cubic root of 103215 is about 46.9080744354.

Adding to 103215 its reverse (512301), we get a palindrome (615516).

The spelling of 103215 in words is "one hundred three thousand, two hundred fifteen".