213103317 has 16 divisors (see below), whose sum is σ = 330054272. Its totient is φ = 119776320.

The previous prime is 213103309. The next prime is 213103327. The reversal of 213103317 is 713301312.

It is not a de Polignac number, because 213103317 - 2³ = 213103309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213103293 and 213103302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213103307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81898 + ... + 84459.

It is an arithmetic number, because the mean of its divisors is an integer number (20628392).

Almost surely, 2^213103317 is an apocalyptic number.

It is an amenable number.

213103317 is a deficient number, since it is larger than the sum of its proper divisors (116950955).

213103317 is a wasteful number, since it uses less digits than its factorization.

213103317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166428.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 213103317 is about 14598.0586723030. The cubic root of 213103317 is about 597.3058064204.

Adding to 213103317 its reverse (713301312), we get a palindrome (926404629).

The spelling of 213103317 in words is "two hundred thirteen million, one hundred three thousand, three hundred seventeen".