213511412 has 12 divisors (see below), whose sum is σ = 381595200. Its totient is φ = 104484216.

The previous prime is 213511411. The next prime is 213511421. The reversal of 213511412 is 214115312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213511411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567662 + ... + 568037.

It is an arithmetic number, because the mean of its divisors is an integer number (31799600).

Almost surely, 2^213511412 is an apocalyptic number.

It is an amenable number.

213511412 is a deficient number, since it is larger than the sum of its proper divisors (168083788).

213511412 is a wasteful number, since it uses less digits than its factorization.

213511412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135750 (or 1135748 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 213511412 is about 14612.0297015849. The cubic root of 213511412 is about 597.6868455058.

Adding to 213511412 its reverse (214115312), we get a palindrome (427626724).

The spelling of 213511412 in words is "two hundred thirteen million, five hundred eleven thousand, four hundred twelve".