103215813 has 8 divisors (see below), whose sum is σ = 137676000. Its totient is φ = 68783088.

The previous prime is 103215803. The next prime is 103215841. The reversal of 103215813 is 318512301.

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

It is not a de Polignac number, because 103215813 - 2⁴ = 103215797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103215803) 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, 4683 + ... + 15111.

It is an arithmetic number, because the mean of its divisors is an integer number (17209500).

Almost surely, 2^103215813 is an apocalyptic number.

It is an amenable number.

103215813 is a deficient number, since it is larger than the sum of its proper divisors (34460187).

103215813 is a wasteful number, since it uses less digits than its factorization.

103215813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13731.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 103215813 is about 10159.5183448823. The cubic root of 103215813 is about 469.0819759629.

The spelling of 103215813 in words is "one hundred three million, two hundred fifteen thousand, eight hundred thirteen".