213420317 has 8 divisors (see below), whose sum is σ = 235770240. Its totient is φ = 191561760.

The previous prime is 213420271. The next prime is 213420323. The reversal of 213420317 is 713024312.

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 213420317 - 2¹⁸ = 213158173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213420292 and 213420301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213420617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121928 + ... + 123665.

It is an arithmetic number, because the mean of its divisors is an integer number (29471280).

Almost surely, 2^213420317 is an apocalyptic number.

It is an amenable number.

213420317 is a deficient number, since it is larger than the sum of its proper divisors (22349923).

213420317 is a wasteful number, since it uses less digits than its factorization.

213420317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245683.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 213420317 is about 14608.9122456123. The cubic root of 213420317 is about 597.6018320512.

Adding to 213420317 its reverse (713024312), we get a palindrome (926444629).

The spelling of 213420317 in words is "two hundred thirteen million, four hundred twenty thousand, three hundred seventeen".