213412356 has 72 divisors (see below), whose sum is σ = 576707040. Its totient is φ = 66306816.

The previous prime is 213412333. The next prime is 213412357. The reversal of 213412356 is 653214312.

213412356 is a `hidden beast` number, since 213 + 412 + 35 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (213412357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63855 + ... + 67113.

It is an arithmetic number, because the mean of its divisors is an integer number (8009820).

Almost surely, 2^213412356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213412356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288353520).

213412356 is an abundant number, since it is smaller than the sum of its proper divisors (363294684).

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

213412356 is a wasteful number, since it uses less digits than its factorization.

213412356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3393 (or 3388 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 213412356 is about 14608.6397724087. The cubic root of 213412356 is about 597.5944013819.

Adding to 213412356 its reverse (653214312), we get a palindrome (866626668).

The spelling of 213412356 in words is "two hundred thirteen million, four hundred twelve thousand, three hundred fifty-six".