213422517 has 24 divisors (see below), whose sum is σ = 384346560. Its totient is φ = 110868480.

The previous prime is 213422509. The next prime is 213422519. The reversal of 213422517 is 715224312.

213422517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213422517 - 2³ = 213422509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213422519) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153292 + ... + 154677.

It is an arithmetic number, because the mean of its divisors is an integer number (16014440).

Almost surely, 2^213422517 is an apocalyptic number.

It is an amenable number.

213422517 is a deficient number, since it is larger than the sum of its proper divisors (170924043).

213422517 is a wasteful number, since it uses less digits than its factorization.

213422517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307993 (or 307990 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 213422517 is about 14608.9875419209. The cubic root of 213422517 is about 597.6038854631.

Adding to 213422517 its reverse (715224312), we get a palindrome (928646829).

The spelling of 213422517 in words is "two hundred thirteen million, four hundred twenty-two thousand, five hundred seventeen".