213102317 has 4 divisors (see below), whose sum is σ = 214780416. Its totient is φ = 211424220.

The previous prime is 213102289. The next prime is 213102319. The reversal of 213102317 is 713201312.

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.

It is a cyclic number.

It is not a de Polignac number, because 213102317 - 2¹⁰ = 213101293 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 (213102319) 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, 838859 + ... + 839112.

It is an arithmetic number, because the mean of its divisors is an integer number (53695104).

Almost surely, 2^213102317 is an apocalyptic number.

It is an amenable number.

213102317 is a deficient number, since it is larger than the sum of its proper divisors (1678099).

213102317 is a wasteful number, since it uses less digits than its factorization.

213102317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678098.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 213102317 is about 14598.0244211332. The cubic root of 213102317 is about 597.3048721212.

Adding to 213102317 its reverse (713201312), we get a palindrome (926303629).

The spelling of 213102317 in words is "two hundred thirteen million, one hundred two thousand, three hundred seventeen".