213531020202 has 32 divisors (see below), whose sum is σ = 432276300288. Its totient is φ = 70308237296.

The previous prime is 213531020191. The next prime is 213531020221. The reversal of 213531020202 is 202020135312.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3446833 + ... + 3508235.

It is an arithmetic number, because the mean of its divisors is an integer number (13508634384).

Almost surely, 2^213531020202 is an apocalyptic number.

213531020202 is an abundant number, since it is smaller than the sum of its proper divisors (218745280086).

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

213531020202 is a wasteful number, since it uses less digits than its factorization.

213531020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68474.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 213531020202 its reverse (202020135312), we get a palindrome (415551155514).

It can be divided in two parts, 2135310 and 20202, that added together give a palindrome (2155512).

The spelling of 213531020202 in words is "two hundred thirteen billion, five hundred thirty-one million, twenty thousand, two hundred two".