213520326 has 16 divisors (see below), whose sum is σ = 427244544. Its totient is φ = 71139464.

The previous prime is 213520291. The next prime is 213520337. The reversal of 213520326 is 623025312.

It is a junction number, because it is equal to n+sod(n) for n = 213520296 and 213520305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7411 + ... + 21953.

It is an arithmetic number, because the mean of its divisors is an integer number (26702784).

Almost surely, 2^213520326 is an apocalyptic number.

213520326 is an abundant number, since it is smaller than the sum of its proper divisors (213724218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213520326 is a wasteful number, since it uses less digits than its factorization.

213520326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16995.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 213520326 is about 14612.3347210499. The cubic root of 213520326 is about 597.6951631040.

Adding to 213520326 its reverse (623025312), we get a palindrome (836545638).

The spelling of 213520326 in words is "two hundred thirteen million, five hundred twenty thousand, three hundred twenty-six".