212343434 has 8 divisors (see below), whose sum is σ = 318621600. Its totient is φ = 106136236.

The previous prime is 212343433. The next prime is 212343457. The reversal of 212343434 is 434343212.

212343434 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (212343431) 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 3 ways as a sum of consecutive naturals, for example, 9494 + ... + 22689.

It is an arithmetic number, because the mean of its divisors is an integer number (39827700).

Almost surely, 2^212343434 is an apocalyptic number.

212343434 is a deficient number, since it is larger than the sum of its proper divisors (106278166).

212343434 is a wasteful number, since it uses less digits than its factorization.

212343434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35484.

The product of its digits is 6912, while the sum is 26.

The square root of 212343434 is about 14572.0085780925. The cubic root of 212343434 is about 596.5950039640.

Adding to 212343434 its reverse (434343212), we get a palindrome (646686646).

The spelling of 212343434 in words is "two hundred twelve million, three hundred forty-three thousand, four hundred thirty-four".