213216526 has 8 divisors (see below), whose sum is σ = 330853320. Its totient is φ = 102932088.

The previous prime is 213216511. The next prime is 213216527. The reversal of 213216526 is 625612312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×213216526² = 90922573919017352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213216494 and 213216503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213216527) 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, 1838016 + ... + 1838131.

It is an arithmetic number, because the mean of its divisors is an integer number (41356665).

Almost surely, 2^213216526 is an apocalyptic number.

213216526 is a deficient number, since it is larger than the sum of its proper divisors (117636794).

213216526 is a wasteful number, since it uses less digits than its factorization.

213216526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3676178.

The product of its digits is 4320, while the sum is 28.

The square root of 213216526 is about 14601.9356935990. The cubic root of 213216526 is about 597.4115586025.

Adding to 213216526 its reverse (625612312), we get a palindrome (838828838).

The spelling of 213216526 in words is "two hundred thirteen million, two hundred sixteen thousand, five hundred twenty-six".