103215513 has 8 divisors (see below), whose sum is σ = 143604288. Its totient is φ = 65818544.

The previous prime is 103215493. The next prime is 103215521. The reversal of 103215513 is 315512301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 103215513 - 2¹² = 103211417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103215513.

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 7 ways as a sum of consecutive naturals, for example, 747870 + ... + 748007.

It is an arithmetic number, because the mean of its divisors is an integer number (17950536).

Almost surely, 2^103215513 is an apocalyptic number.

It is an amenable number.

103215513 is a deficient number, since it is larger than the sum of its proper divisors (40388775).

103215513 is a wasteful number, since it uses less digits than its factorization.

103215513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495903.

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

The square root of 103215513 is about 10159.5035803921. The cubic root of 103215513 is about 469.0815214953.

Adding to 103215513 its reverse (315512301), we get a palindrome (418727814).

The spelling of 103215513 in words is "one hundred three million, two hundred fifteen thousand, five hundred thirteen".