213312412 has 12 divisors (see below), whose sum is σ = 374499216. Its totient is φ = 106312640.

The previous prime is 213312401. The next prime is 213312431. The reversal of 213312412 is 214213312.

It is a happy number.

It is a super-3 number, since 3×213312412³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 213312412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84493 + ... + 86980.

It is an arithmetic number, because the mean of its divisors is an integer number (31208268).

Almost surely, 2^213312412 is an apocalyptic number.

It is an amenable number.

213312412 is a deficient number, since it is larger than the sum of its proper divisors (161186804).

213312412 is a wasteful number, since it uses less digits than its factorization.

213312412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171788 (or 171786 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 213312412 is about 14605.2186563570. The cubic root of 213312412 is about 597.5010995352.

Adding to 213312412 its reverse (214213312), we get a palindrome (427525724).

The spelling of 213312412 in words is "two hundred thirteen million, three hundred twelve thousand, four hundred twelve".