103215213 has 12 divisors (see below), whose sum is σ = 153898368. Its totient is φ = 66590280.

The previous prime is 103215209. The next prime is 103215227. The reversal of 103215213 is 312512301.

It is not a de Polignac number, because 103215213 - 2² = 103215209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103215113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 184695 + ... + 185252.

It is an arithmetic number, because the mean of its divisors is an integer number (12824864).

Almost surely, 2^103215213 is an apocalyptic number.

It is an amenable number.

103215213 is a deficient number, since it is larger than the sum of its proper divisors (50683155).

103215213 is a wasteful number, since it uses less digits than its factorization.

103215213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369984 (or 369981 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 103215213 is about 10159.4888158805. The cubic root of 103215213 is about 469.0810670268.

Adding to 103215213 its reverse (312512301), we get a palindrome (415727514).

The spelling of 103215213 in words is "one hundred three million, two hundred fifteen thousand, two hundred thirteen".