212131331415 has 12 divisors (see below), whose sum is σ = 367694307864. Its totient is φ = 113136710064.

The previous prime is 212131331407. The next prime is 212131331417. The reversal of 212131331415 is 514133131212.

212131331415 is a `hidden beast` number, since 2 + 1 + 21 + 313 + 314 + 15 = 666.

It is not a de Polignac number, because 212131331415 - 2³ = 212131331407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212131331417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2357014749 + ... + 2357014838.

It is an arithmetic number, because the mean of its divisors is an integer number (30641192322).

Almost surely, 2^212131331415 is an apocalyptic number.

212131331415 is a deficient number, since it is larger than the sum of its proper divisors (155562976449).

212131331415 is a wasteful number, since it uses less digits than its factorization.

212131331415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714029598 (or 4714029595 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

Adding to 212131331415 its reverse (514133131212), we get a palindrome (726264462627).

The spelling of 212131331415 in words is "two hundred twelve billion, one hundred thirty-one million, three hundred thirty-one thousand, four hundred fifteen".