213640331602 has 16 divisors (see below), whose sum is σ = 320871731040. Its totient is φ = 106683167232.

The previous prime is 213640331599. The next prime is 213640331647. The reversal of 213640331602 is 206133046312.

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, 5929213 + ... + 5965135.

It is an arithmetic number, because the mean of its divisors is an integer number (20054483190).

Almost surely, 2^213640331602 is an apocalyptic number.

213640331602 is a deficient number, since it is larger than the sum of its proper divisors (107231399438).

213640331602 is a wasteful number, since it uses less digits than its factorization.

213640331602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39657.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 213640331602 its reverse (206133046312), we get a palindrome (419773377914).

The spelling of 213640331602 in words is "two hundred thirteen billion, six hundred forty million, three hundred thirty-one thousand, six hundred two".