10217813 has 4 divisors (see below), whose sum is σ = 10256928. Its totient is φ = 10178700.

The previous prime is 10217803. The next prime is 10217821. The reversal of 10217813 is 31871201.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31871201 = 5449 ⋅5849.

It is a cyclic number.

It is not a de Polignac number, because 10217813 - 2¹⁶ = 10152277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10217803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19163 + ... + 19688.

It is an arithmetic number, because the mean of its divisors is an integer number (2564232).

Almost surely, 2^10217813 is an apocalyptic number.

It is an amenable number.

10217813 is a deficient number, since it is larger than the sum of its proper divisors (39115).

10217813 is an equidigital number, since it uses as much as digits as its factorization.

10217813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39114.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 10217813 is about 3196.5314013787. The cubic root of 10217813 is about 216.9964605452.

The spelling of 10217813 in words is "ten million, two hundred seventeen thousand, eight hundred thirteen".