213131213022012 has 24 divisors (see below), whose sum is σ = 497306604687312. Its totient is φ = 71043674678400.

The previous prime is 213131213021977. The next prime is 213131213022067. The reversal of 213131213022012 is 210220312131312.

It is a super-3 number, since 3×213131213022012³ (a number of 44 digits) contains 333 as substring.

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, 7409062 + ... + 21935282.

It is an arithmetic number, because the mean of its divisors is an integer number (20721108528638).

Almost surely, 2^{213131213022012} is an apocalyptic number.

It is an amenable number.

213131213022012 is an abundant number, since it is smaller than the sum of its proper divisors (284175391665300).

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

213131213022012 is a wasteful number, since it uses less digits than its factorization.

213131213022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15748909 (or 15748907 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 213131213022012 its reverse (210220312131312), we get a palindrome (423351525153324).

The spelling of 213131213022012 in words is "two hundred thirteen trillion, one hundred thirty-one billion, two hundred thirteen million, twenty-two thousand, twelve".