213326505 has 24 divisors (see below), whose sum is σ = 422590272. Its totient is φ = 97520544.

The previous prime is 213326501. The next prime is 213326527. The reversal of 213326505 is 505623312.

213326505 is a `hidden beast` number, since 2 + 1 + 3 + 3 + 2 + 650 + 5 = 666.

It is not a de Polignac number, because 213326505 - 2² = 213326501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213326501) 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, 338299 + ... + 338928.

It is an arithmetic number, because the mean of its divisors is an integer number (17607928).

Almost surely, 2^213326505 is an apocalyptic number.

It is an amenable number.

213326505 is a deficient number, since it is larger than the sum of its proper divisors (209263767).

213326505 is a wasteful number, since it uses less digits than its factorization.

213326505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677245 (or 677242 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 213326505 is about 14605.7011129216. The cubic root of 213326505 is about 597.5142576968.

Adding to 213326505 its reverse (505623312), we get a palindrome (718949817).

The spelling of 213326505 in words is "two hundred thirteen million, three hundred twenty-six thousand, five hundred five".