213241316505 has 64 divisors (see below), whose sum is σ = 403694530560. Its totient is φ = 94045222656.

The previous prime is 213241316503. The next prime is 213241316513. The reversal of 213241316505 is 505613142312.

It is not a de Polignac number, because 213241316505 - 2¹ = 213241316503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213241316503) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3879444 + ... + 3934026.

It is an arithmetic number, because the mean of its divisors is an integer number (6307727040).

Almost surely, 2^213241316505 is an apocalyptic number.

It is an amenable number.

213241316505 is a deficient number, since it is larger than the sum of its proper divisors (190453214055).

213241316505 is a wasteful number, since it uses less digits than its factorization.

213241316505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55910.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 213241316505 its reverse (505613142312), we get a palindrome (718854458817).

The spelling of 213241316505 in words is "two hundred thirteen billion, two hundred forty-one million, three hundred sixteen thousand, five hundred five".