213131123314434 has 96 divisors (see below), whose sum is σ = 512870468463360. Its totient is φ = 65577456090432.

The previous prime is 213131123314409. The next prime is 213131123314453. The reversal of 213131123314434 is 434413321131312.

213131123314434 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 311 + 2 + 331 + 4 + 4 + 3 + 4 = 666.

213131123314434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 499645207 + ... + 500071589.

It is an arithmetic number, because the mean of its divisors is an integer number (5342400713160).

Almost surely, 2^{213131123314434} is an apocalyptic number.

213131123314434 is an abundant number, since it is smaller than the sum of its proper divisors (299739345148926).

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

213131123314434 is a wasteful number, since it uses less digits than its factorization.

213131123314434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481193 (or 481174 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

Adding to 213131123314434 its reverse (434413321131312), we get a palindrome (647544444445746).

The spelling of 213131123314434 in words is "two hundred thirteen trillion, one hundred thirty-one billion, one hundred twenty-three million, three hundred fourteen thousand, four hundred thirty-four".